From f40bad3fba14ed398ffbe06a62f4b4f6233db1e6 Mon Sep 17 00:00:00 2001
From: payonel <payonel@hotmail.com>
Date: Sat, 24 Jun 2017 20:25:45 -0700
Subject: [PATCH 1/9] protect env.load if defined, else use mt. simplify free
 by using io.write as print loads buffered_write

---
 .../opencomputers/loot/openos/bin/free.lua    |  4 +--
 .../loot/openos/boot/01_process.lua           | 33 +++++++++++--------
 2 files changed, 21 insertions(+), 16 deletions(-)

diff --git a/src/main/resources/assets/opencomputers/loot/openos/bin/free.lua b/src/main/resources/assets/opencomputers/loot/openos/bin/free.lua
index ea3f6d0d0..cc637f3d4 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/bin/free.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/bin/free.lua
@@ -1,8 +1,8 @@
 local computer = require("computer")
 local total = computer.totalMemory()
 local max = 0
-for i=1,40 do
+for _=1,40 do
   max = math.max(max, computer.freeMemory())
   os.sleep(0) -- invokes gc
 end
-print(string.format("Total%12d\nUsed%13d\nFree%13d", total, total - max, max))
+io.write(string.format("Total%12d\nUsed%13d\nFree%13d\n", total, total - max, max))
diff --git a/src/main/resources/assets/opencomputers/loot/openos/boot/01_process.lua b/src/main/resources/assets/opencomputers/loot/openos/boot/01_process.lua
index 9ae2e27be..6b9943e69 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/boot/01_process.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/boot/01_process.lua
@@ -27,21 +27,26 @@ local intercept_load
 intercept_load = function(source, label, mode, env)
   if env then
     local prev_load = env.load or intercept_load
-    local env_mt = getmetatable(env) or {}
-    local env_mt_index = env_mt.__index
-    env_mt.__index = function(tbl, key)
-      if key == "load" then
-        return function(_source, _label, _mode, _env)
-          return prev_load(_source, _label, _mode, _env or env)
-        end
-      elseif type(env_mt_index) == "table" then
-        return env_mt_index[key]
-      elseif env_mt_index then
-        return env_mt_index(tbl, key)
-      end
-      return nil
+    local next_load = function(_source, _label, _mode, _env)
+      return prev_load(_source, _label, _mode, _env or env)
+    end
+    if rawget(env, "load") then -- overwrite load 
+      env.load = next_load
+    else -- else it must be an __index load, or it didn't have one
+      local env_mt = getmetatable(env) or {}
+      local env_mt_index = env_mt.__index
+      env_mt.__index = function(tbl, key)
+        if key == "load" then
+          return next_load
+        elseif type(env_mt_index) == "table" then
+          return env_mt_index[key]
+        elseif env_mt_index then
+          return env_mt_index(tbl, key)
+        end
+        return nil
+      end
+      setmetatable(env, env_mt)
     end
-    setmetatable(env, env_mt)
   end
   return kernel_load(source, label, mode, env or process.info().env)
 end

From 6a2586b536ccdd4da2901ae2acc0a1d335179d73 Mon Sep 17 00:00:00 2001
From: payonel <payonel@hotmail.com>
Date: Sat, 24 Jun 2017 23:43:19 -0700
Subject: [PATCH 2/9] bisect filesystem lib for memory reduction to boot to
 shell

---
 .../loot/openos/boot/90_filesystem.lua        |   2 +
 .../loot/openos/lib/filesystem.lua            | 199 +++---------------
 .../opencomputers/loot/openos/lib/package.lua |  12 +-
 .../opencomputers/loot/openos/lib/sh.lua      |   1 -
 .../opencomputers/loot/openos/lib/text.lua    |   1 -
 .../loot/openos/opt/core/full_filesystem.lua  | 138 ++++++++++++
 6 files changed, 176 insertions(+), 177 deletions(-)
 create mode 100644 src/main/resources/assets/opencomputers/loot/openos/opt/core/full_filesystem.lua

diff --git a/src/main/resources/assets/opencomputers/loot/openos/boot/90_filesystem.lua b/src/main/resources/assets/opencomputers/loot/openos/boot/90_filesystem.lua
index 5b0da6ca7..8c71f2cad 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/boot/90_filesystem.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/boot/90_filesystem.lua
@@ -63,3 +63,5 @@ end
 event.listen("init", onInit)
 event.listen("component_added", onComponentAdded)
 event.listen("component_removed", onComponentRemoved)
+
+require("package").delay(fs, "/opt/core/full_filesystem.lua")
diff --git a/src/main/resources/assets/opencomputers/loot/openos/lib/filesystem.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/filesystem.lua
index 2346e7ae7..2171f4279 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/lib/filesystem.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/lib/filesystem.lua
@@ -1,7 +1,7 @@
 local component = require("component")
 local unicode = require("unicode")
 
-local filesystem, fileStream = {}, {}
+local filesystem = {}
 local isAutorunEnabled = nil
 local mtab = {name="", children={}, links={}}
 local fstab = {}
@@ -116,8 +116,6 @@ function filesystem.setAutorunEnabled(value)
   saveConfig()
 end
 
-filesystem.segments = segments
-
 function filesystem.canonical(path)
   local result = table.concat(segments(path), "/")
   if unicode.sub(path, 1, 1) == "/" then
@@ -165,45 +163,6 @@ function filesystem.realPath(path)
   return table.concat(parts, "/")
 end
 
-function filesystem.isLink(path)
-  local name = filesystem.name(path)
-  local node, rest, vnode, vrest = findNode(filesystem.path(path), false, true)
-  if not node then return nil, rest end
-  local target = vnode.links[name]
-  -- having vrest here indicates we are not at the
-  -- owning vnode due to a mount point above this point
-  -- but we can have a target when there is a link at
-  -- the mount point root, with the same name
-  if not vrest and target ~= nil then
-    return true, target
-  end
-  return false
-end
-
-function filesystem.link(target, linkpath)
-  checkArg(1, target, "string")
-  checkArg(2, linkpath, "string")
-
-  if filesystem.exists(linkpath) then
-    return nil, "file already exists"
-  end
-  local linkpath_parent = filesystem.path(linkpath)
-  if not filesystem.exists(linkpath_parent) then
-    return nil, "no such directory"
-  end
-  local linkpath_real, reason = filesystem.realPath(linkpath_parent)
-  if not linkpath_real then
-    return nil, reason
-  end
-  if not filesystem.isDirectory(linkpath_real) then
-    return nil, "not a directory"
-  end
-
-  local _, _, vnode, _ = findNode(linkpath_real, true)
-  vnode.links[filesystem.name(linkpath)] = target
-  return true
-end
-
 function filesystem.mount(fs, path)
   checkArg(1, fs, "string", "table")
   if type(fs) == "string" then
@@ -260,17 +219,6 @@ function filesystem.mount(fs, path)
   return true
 end
 
-function filesystem.mounts()
-  local tmp = {}
-  for path,node in pairs(fstab) do
-    table.insert(tmp, {node.fs,path})
-  end
-  return function()
-    local next = table.remove(tmp)
-    if next then return table.unpack(next) end
-  end
-end
-
 function filesystem.path(path)
   local parts = segments(path)
   local result = table.concat(parts, "/", 1, #parts - 1) .. "/"
@@ -306,33 +254,6 @@ function filesystem.proxy(filter)
   return component.proxy(address)
 end
 
-function filesystem.umount(fsOrPath)
-  checkArg(1, fsOrPath, "string", "table")
-  local real
-  local fs
-  local addr
-  if type(fsOrPath) == "string" then
-    real = filesystem.realPath(fsOrPath)
-    addr = fsOrPath
-  else -- table
-    fs = fsOrPath
-  end
-
-  local paths = {}
-  for path,node in pairs(fstab) do
-    if real == path or addr == node.fs.address or fs == node.fs then
-      table.insert(paths, path)
-    end
-  end
-  for _,path in ipairs(paths) do
-    local node = fstab[path]
-    fstab[path] = nil
-    node.fs = nil
-    node.parent.children[node.name] = nil
-  end
-  return #paths > 0
-end
-
 function filesystem.exists(path)
   if not filesystem.realPath(filesystem.path(path)) then
     return false
@@ -346,17 +267,6 @@ function filesystem.exists(path)
   return false
 end
 
-function filesystem.size(path)
-  local node, rest, vnode, vrest = findNode(path, false, true)
-  if not node or not vnode.fs and (not vrest or vnode.links[vrest]) then
-    return 0 -- virtual directory or symlink
-  end
-  if node.fs and rest then
-    return node.fs.size(rest)
-  end
-  return 0 -- no such file or directory
-end
-
 function filesystem.isDirectory(path)
   local real, reason = filesystem.realPath(path)
   if not real then return nil, reason end
@@ -370,17 +280,6 @@ function filesystem.isDirectory(path)
   return false
 end
 
-function filesystem.lastModified(path)
-  local node, rest, vnode, vrest = findNode(path, false, true)
-  if not node or not vnode.fs and not vrest then
-    return 0 -- virtual directory
-  end
-  if node.fs and rest then
-    return node.fs.lastModified(rest)
-  end
-  return 0 -- no such file or directory
-end
-
 function filesystem.list(path)
   local node, rest, vnode, vrest = findNode(path, false, true)
   local result = {}
@@ -410,24 +309,6 @@ function filesystem.list(path)
   end
 end
 
-function filesystem.makeDirectory(path)
-  if filesystem.exists(path) then
-    return nil, "file or directory with that name already exists"
-  end
-  local node, rest = findNode(path)
-  if node.fs and rest then
-    local success, reason = node.fs.makeDirectory(rest)
-    if not success and not reason and node.fs.isReadOnly() then
-      reason = "filesystem is readonly"
-    end
-    return success, reason
-  end
-  if node.fs then
-    return nil, "virtual directory with that name already exists"
-  end
-  return nil, "cannot create a directory in a virtual directory"
-end
-
 function filesystem.remove(path)
   return require("tools/fsmod").remove(path, findNode)
 end
@@ -436,53 +317,6 @@ function filesystem.rename(oldPath, newPath)
   return require("tools/fsmod").rename(oldPath, newPath, findNode)
 end
 
-function filesystem.copy(fromPath, toPath)
-  local data = false
-  local input, reason = filesystem.open(fromPath, "rb")
-  if input then
-    local output, reason = filesystem.open(toPath, "wb")
-    if output then
-      repeat
-        data, reason = input:read(1024)
-        if not data then break end
-        data, reason = output:write(data)
-        if not data then data, reason = false, "failed to write" end
-      until not data
-      output:close()
-    end
-    input:close()
-  end
-  return data == nil, reason
-end
-
-function fileStream:close()
-  if self.handle then
-    self.fs.close(self.handle)
-    self.handle = nil
-  end
-end
-
-function fileStream:read(n)
-  if not self.handle then
-    return nil, "file is closed"
-  end
-  return self.fs.read(self.handle, n)
-end
-
-function fileStream:seek(whence, offset)
-  if not self.handle then
-    return nil, "file is closed"
-  end
-  return self.fs.seek(self.handle, whence, offset)
-end
-
-function fileStream:write(str)
-  if not self.handle then
-    return nil, "file is closed"
-  end
-  return self.fs.write(self.handle, str)
-end
-
 function filesystem.open(path, mode)
   checkArg(1, path, "string")
   mode = tostring(mode or "r")
@@ -504,13 +338,36 @@ function filesystem.open(path, mode)
     return nil, reason
   end
 
-  local stream = {fs = node.fs, handle = handle}
+  local function create_handle_method(key)
+    return function(self, ...)
+      if not self.handle then
+        return nil, "file is closed"
+      end
+      return self.fs[key](self.handle, ...)
+    end
+  end
 
-  local metatable = {__index = fileStream,
-                     __metatable = "filestream"}
-  return setmetatable(stream, metatable)
+  local stream =
+  {
+    fs = node.fs,
+    handle = handle,
+    close = function(self)
+      if self.handle then
+        self.fs.close(self.handle)
+        self.handle = nil
+      end
+    end
+  }
+  stream.read = create_handle_method("read")
+  stream.seek = create_handle_method("seek")
+  stream.write = create_handle_method("write")
+  return stream
 end
 
+filesystem.findNode = findNode
+filesystem.segments = segments
+filesystem.fstab = fstab
+
 -------------------------------------------------------------------------------
 
 return filesystem
diff --git a/src/main/resources/assets/opencomputers/loot/openos/lib/package.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/package.lua
index ebecdfd77..3f356ebff 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/lib/package.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/lib/package.lua
@@ -70,14 +70,18 @@ function require(module)
 end
 
 function package.delay(lib, file)
-  setmetatable(lib, 
-  {
+  local mt = {
     __index = function(tbl, key)
-      setmetatable(tbl, nil)
+      setmetatable(lib, nil)
+      setmetatable(lib.internal or {}, nil)
       dofile(file)
       return tbl[key]
     end
-  })
+  }
+  if lib.internal then
+    setmetatable(lib.internal, mt)
+  end
+  setmetatable(lib, mt)
 end
 
 -------------------------------------------------------------------------------
diff --git a/src/main/resources/assets/opencomputers/loot/openos/lib/sh.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/sh.lua
index a17cf0ddd..3b699607f 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/lib/sh.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/lib/sh.lua
@@ -273,6 +273,5 @@ function sh.hintHandler(full_line, cursor)
 end
 
 require("package").delay(sh, "/opt/core/full_sh.lua")
-require("package").delay(sh.internal, "/opt/core/full_sh.lua")
 
 return sh
diff --git a/src/main/resources/assets/opencomputers/loot/openos/lib/text.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/text.lua
index 764ba408f..1f527ebbb 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/lib/text.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/lib/text.lua
@@ -145,6 +145,5 @@ function text.internal.words(input, options)
 end
 
 require("package").delay(text, "/opt/core/full_text.lua")
-require("package").delay(text.internal, "/opt/core/full_text.lua")
 
 return text
diff --git a/src/main/resources/assets/opencomputers/loot/openos/opt/core/full_filesystem.lua b/src/main/resources/assets/opencomputers/loot/openos/opt/core/full_filesystem.lua
new file mode 100644
index 000000000..eee2ef421
--- /dev/null
+++ b/src/main/resources/assets/opencomputers/loot/openos/opt/core/full_filesystem.lua
@@ -0,0 +1,138 @@
+local filesystem = require("filesystem")
+
+function filesystem.makeDirectory(path)
+  if filesystem.exists(path) then
+    return nil, "file or directory with that name already exists"
+  end
+  local node, rest = filesystem.findNode(path)
+  if node.fs and rest then
+    local success, reason = node.fs.makeDirectory(rest)
+    if not success and not reason and node.fs.isReadOnly() then
+      reason = "filesystem is readonly"
+    end
+    return success, reason
+  end
+  if node.fs then
+    return nil, "virtual directory with that name already exists"
+  end
+  return nil, "cannot create a directory in a virtual directory"
+end
+
+function filesystem.lastModified(path)
+  local node, rest, vnode, vrest = filesystem.findNode(path, false, true)
+  if not node or not vnode.fs and not vrest then
+    return 0 -- virtual directory
+  end
+  if node.fs and rest then
+    return node.fs.lastModified(rest)
+  end
+  return 0 -- no such file or directory
+end
+
+function filesystem.mounts()
+  local tmp = {}
+  for path,node in pairs(filesystem.fstab) do
+    table.insert(tmp, {node.fs,path})
+  end
+  return function()
+    local next = table.remove(tmp)
+    if next then return table.unpack(next) end
+  end
+end
+
+function filesystem.link(target, linkpath)
+  checkArg(1, target, "string")
+  checkArg(2, linkpath, "string")
+
+  if filesystem.exists(linkpath) then
+    return nil, "file already exists"
+  end
+  local linkpath_parent = filesystem.path(linkpath)
+  if not filesystem.exists(linkpath_parent) then
+    return nil, "no such directory"
+  end
+  local linkpath_real, reason = filesystem.realPath(linkpath_parent)
+  if not linkpath_real then
+    return nil, reason
+  end
+  if not filesystem.isDirectory(linkpath_real) then
+    return nil, "not a directory"
+  end
+
+  local _, _, vnode, _ = filesystem.findNode(linkpath_real, true)
+  vnode.links[filesystem.name(linkpath)] = target
+  return true
+end
+
+function filesystem.umount(fsOrPath)
+  checkArg(1, fsOrPath, "string", "table")
+  local real
+  local fs
+  local addr
+  if type(fsOrPath) == "string" then
+    real = filesystem.realPath(fsOrPath)
+    addr = fsOrPath
+  else -- table
+    fs = fsOrPath
+  end
+
+  local paths = {}
+  for path,node in pairs(filesystem.fstab) do
+    if real == path or addr == node.fs.address or fs == node.fs then
+      table.insert(paths, path)
+    end
+  end
+  for _,path in ipairs(paths) do
+    local node = filesystem.fstab[path]
+    filesystem.fstab[path] = nil
+    node.fs = nil
+    node.parent.children[node.name] = nil
+  end
+  return #paths > 0
+end
+
+function filesystem.size(path)
+  local node, rest, vnode, vrest = filesystem.findNode(path, false, true)
+  if not node or not vnode.fs and (not vrest or vnode.links[vrest]) then
+    return 0 -- virtual directory or symlink
+  end
+  if node.fs and rest then
+    return node.fs.size(rest)
+  end
+  return 0 -- no such file or directory
+end
+
+function filesystem.isLink(path)
+  local name = filesystem.name(path)
+  local node, rest, vnode, vrest = filesystem.findNode(filesystem.path(path), false, true)
+  if not node then return nil, rest end
+  local target = vnode.links[name]
+  -- having vrest here indicates we are not at the
+  -- owning vnode due to a mount point above this point
+  -- but we can have a target when there is a link at
+  -- the mount point root, with the same name
+  if not vrest and target ~= nil then
+    return true, target
+  end
+  return false
+end
+
+function filesystem.copy(fromPath, toPath)
+  local data = false
+  local input, reason = filesystem.open(fromPath, "rb")
+  if input then
+    local output, reason = filesystem.open(toPath, "wb")
+    if output then
+      repeat
+        data, reason = input:read(1024)
+        if not data then break end
+        data, reason = output:write(data)
+        if not data then data, reason = false, "failed to write" end
+      until not data
+      output:close()
+    end
+    input:close()
+  end
+  return data == nil, reason
+end
+

From e3525d9a00f85d2626e8ce1775e42bfd78f57387 Mon Sep 17 00:00:00 2001
From: payonel <payonel@hotmail.com>
Date: Sun, 25 Jun 2017 09:11:20 -0700
Subject: [PATCH 3/9] safer to try to load a library full before removing
 metatable in case of oom

---
 .../resources/assets/opencomputers/loot/openos/lib/package.lua  | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/resources/assets/opencomputers/loot/openos/lib/package.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/package.lua
index 3f356ebff..394247935 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/lib/package.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/lib/package.lua
@@ -72,9 +72,9 @@ end
 function package.delay(lib, file)
   local mt = {
     __index = function(tbl, key)
+      dofile(file)
       setmetatable(lib, nil)
       setmetatable(lib.internal or {}, nil)
-      dofile(file)
       return tbl[key]
     end
   }

From dc7a1940201c29c99c841b04b0a37208728bb44d Mon Sep 17 00:00:00 2001
From: payonel <payonel@hotmail.com>
Date: Sun, 25 Jun 2017 09:31:58 -0700
Subject: [PATCH 4/9] moving /opt/core to /lib/core

---
 .../assets/opencomputers/loot/openos/bin/install.lua |  2 +-
 .../assets/opencomputers/loot/openos/bin/ls.lua      |  2 +-
 .../assets/opencomputers/loot/openos/bin/lua.lua     |  2 +-
 .../assets/opencomputers/loot/openos/bin/mount.lua   |  6 +++---
 .../opencomputers/loot/openos/boot/90_filesystem.lua |  2 +-
 .../assets/opencomputers/loot/openos/init.lua        |  2 +-
 .../loot/openos/{opt => lib}/core/boot.lua           |  0
 .../loot/openos/{opt => lib}/core/devfs/01_hw.lua    |  3 +--
 .../loot/openos/{opt => lib}/core/devfs/02_utils.lua |  0
 .../{opt => lib}/core/devfs/adapters/computer.lua    |  0
 .../{opt => lib}/core/devfs/adapters/eeprom.lua      |  0
 .../{opt => lib}/core/devfs/adapters/filesystem.lua  |  0
 .../openos/{opt => lib}/core/devfs/adapters/gpu.lua  |  0
 .../{opt => lib}/core/devfs/adapters/internet.lua    |  0
 .../{opt => lib}/core/devfs/adapters/modem.lua       |  0
 .../{opt => lib}/core/devfs/adapters/screen.lua      |  0
 .../openos/{opt => lib}/core/device_labeling.lua     |  0
 .../openos/{opt => lib}/core/full_filesystem.lua     |  0
 .../loot/openos/{opt => lib}/core/full_keyboard.lua  |  0
 .../loot/openos/{opt => lib}/core/full_ls.lua        |  0
 .../loot/openos/{opt => lib}/core/full_sh.lua        |  0
 .../loot/openos/{opt => lib}/core/full_text.lua      |  0
 .../openos/{opt => lib}/core/full_transforms.lua     |  0
 .../loot/openos/{opt => lib}/core/full_tty.lua       |  0
 .../loot/openos/{opt => lib}/core/install_basics.lua |  2 +-
 .../loot/openos/{opt => lib}/core/install_utils.lua  |  0
 .../loot/openos/{opt => lib}/core/lua_shell.lua      |  0
 .../loot/openos/{opt => lib}/core/ro_wrapper.lua     |  0
 .../assets/opencomputers/loot/openos/lib/devfs.lua   |  4 ++--
 .../opencomputers/loot/openos/lib/keyboard.lua       |  2 +-
 .../assets/opencomputers/loot/openos/lib/sh.lua      |  2 +-
 .../assets/opencomputers/loot/openos/lib/text.lua    |  8 ++++----
 .../opencomputers/loot/openos/lib/transforms.lua     |  2 +-
 .../assets/opencomputers/loot/openos/lib/tty.lua     | 12 ++++++------
 34 files changed, 25 insertions(+), 26 deletions(-)
 rename src/main/resources/assets/opencomputers/loot/openos/{opt => lib}/core/boot.lua (100%)
 rename src/main/resources/assets/opencomputers/loot/openos/{opt => lib}/core/devfs/01_hw.lua (97%)
 rename src/main/resources/assets/opencomputers/loot/openos/{opt => lib}/core/devfs/02_utils.lua (100%)
 rename src/main/resources/assets/opencomputers/loot/openos/{opt => lib}/core/devfs/adapters/computer.lua (100%)
 rename src/main/resources/assets/opencomputers/loot/openos/{opt => lib}/core/devfs/adapters/eeprom.lua (100%)
 rename src/main/resources/assets/opencomputers/loot/openos/{opt => lib}/core/devfs/adapters/filesystem.lua (100%)
 rename src/main/resources/assets/opencomputers/loot/openos/{opt => lib}/core/devfs/adapters/gpu.lua (100%)
 rename src/main/resources/assets/opencomputers/loot/openos/{opt => lib}/core/devfs/adapters/internet.lua (100%)
 rename src/main/resources/assets/opencomputers/loot/openos/{opt => lib}/core/devfs/adapters/modem.lua (100%)
 rename src/main/resources/assets/opencomputers/loot/openos/{opt => lib}/core/devfs/adapters/screen.lua (100%)
 rename src/main/resources/assets/opencomputers/loot/openos/{opt => lib}/core/device_labeling.lua (100%)
 rename src/main/resources/assets/opencomputers/loot/openos/{opt => lib}/core/full_filesystem.lua (100%)
 rename src/main/resources/assets/opencomputers/loot/openos/{opt => lib}/core/full_keyboard.lua (100%)
 rename src/main/resources/assets/opencomputers/loot/openos/{opt => lib}/core/full_ls.lua (100%)
 rename src/main/resources/assets/opencomputers/loot/openos/{opt => lib}/core/full_sh.lua (100%)
 rename src/main/resources/assets/opencomputers/loot/openos/{opt => lib}/core/full_text.lua (100%)
 rename src/main/resources/assets/opencomputers/loot/openos/{opt => lib}/core/full_transforms.lua (100%)
 rename src/main/resources/assets/opencomputers/loot/openos/{opt => lib}/core/full_tty.lua (100%)
 rename src/main/resources/assets/opencomputers/loot/openos/{opt => lib}/core/install_basics.lua (99%)
 rename src/main/resources/assets/opencomputers/loot/openos/{opt => lib}/core/install_utils.lua (100%)
 rename src/main/resources/assets/opencomputers/loot/openos/{opt => lib}/core/lua_shell.lua (100%)
 rename src/main/resources/assets/opencomputers/loot/openos/{opt => lib}/core/ro_wrapper.lua (100%)

diff --git a/src/main/resources/assets/opencomputers/loot/openos/bin/install.lua b/src/main/resources/assets/opencomputers/loot/openos/bin/install.lua
index 2358ada49..f8410e98b 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/bin/install.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/bin/install.lua
@@ -4,7 +4,7 @@ local shell = require("shell")
 local options
 
 do
-  local basic, reason = loadfile("/opt/core/install_basics.lua", "bt", _G)
+  local basic, reason = loadfile("/lib/core/install_basics.lua", "bt", _G)
   if not basic then
     io.stderr:write("failed to load install: " .. tostring(reason) .. "\n")
     return 1
diff --git a/src/main/resources/assets/opencomputers/loot/openos/bin/ls.lua b/src/main/resources/assets/opencomputers/loot/openos/bin/ls.lua
index 4a3db6f9c..25a67968f 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/bin/ls.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/bin/ls.lua
@@ -1,7 +1,7 @@
 -- load complex, if we can (might be low on memory)
 
 local ok, why = pcall(function(...)
-  return loadfile("/opt/core/full_ls.lua", "bt", _G)(...)
+  return loadfile("/lib/core/full_ls.lua", "bt", _G)(...)
 end, ...)
 
 if not ok then
diff --git a/src/main/resources/assets/opencomputers/loot/openos/bin/lua.lua b/src/main/resources/assets/opencomputers/loot/openos/bin/lua.lua
index ebd25f995..d534865df 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/bin/lua.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/bin/lua.lua
@@ -2,7 +2,7 @@ local shell = require("shell")
 local args = shell.parse(...)
 
 if #args == 0 then
-  args = {"/opt/core/lua_shell.lua"}
+  args = {"/lib/core/lua_shell.lua"}
 end
 
 local filename = args[1]
diff --git a/src/main/resources/assets/opencomputers/loot/openos/bin/mount.lua b/src/main/resources/assets/opencomputers/loot/openos/bin/mount.lua
index cfc92bff9..de5eb75b7 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/bin/mount.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/bin/mount.lua
@@ -55,12 +55,12 @@ else
     io.stderr:write(reason,"\n")
     return 1
   elseif ops.r then
-    proxy = dofile("/opt/core/ro_wrapper.lua").wrap(proxy)
+    proxy = dofile("/lib/core/ro_wrapper.lua").wrap(proxy)
   end
 
-  local result, reason = fs.mount(proxy, shell.resolve(args[2]))
+  local result, mount_failure = fs.mount(proxy, shell.resolve(args[2]))
   if not result then
-    io.stderr:write(reason,"\n")
+    io.stderr:write(mount_failure, "\n")
     return 2 -- error code
   end
 end
diff --git a/src/main/resources/assets/opencomputers/loot/openos/boot/90_filesystem.lua b/src/main/resources/assets/opencomputers/loot/openos/boot/90_filesystem.lua
index 8c71f2cad..5e21ed7ed 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/boot/90_filesystem.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/boot/90_filesystem.lua
@@ -64,4 +64,4 @@ event.listen("init", onInit)
 event.listen("component_added", onComponentAdded)
 event.listen("component_removed", onComponentRemoved)
 
-require("package").delay(fs, "/opt/core/full_filesystem.lua")
+require("package").delay(fs, "/lib/core/full_filesystem.lua")
diff --git a/src/main/resources/assets/opencomputers/loot/openos/init.lua b/src/main/resources/assets/opencomputers/loot/openos/init.lua
index 28d4ba670..0e7b102a6 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/init.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/init.lua
@@ -13,7 +13,7 @@ do
     invoke(addr, "close", handle)
     return load(buffer, "=" .. file, "bt", _G)
   end]], "=loadfile", "bt", _G)()
-  loadfile("/opt/core/boot.lua")(loadfile)
+  loadfile("/lib/core/boot.lua")(loadfile)
 end
 
 while true do
diff --git a/src/main/resources/assets/opencomputers/loot/openos/opt/core/boot.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/core/boot.lua
similarity index 100%
rename from src/main/resources/assets/opencomputers/loot/openos/opt/core/boot.lua
rename to src/main/resources/assets/opencomputers/loot/openos/lib/core/boot.lua
diff --git a/src/main/resources/assets/opencomputers/loot/openos/opt/core/devfs/01_hw.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/core/devfs/01_hw.lua
similarity index 97%
rename from src/main/resources/assets/opencomputers/loot/openos/opt/core/devfs/01_hw.lua
rename to src/main/resources/assets/opencomputers/loot/openos/lib/core/devfs/01_hw.lua
index cc4712124..50e4a3147 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/opt/core/devfs/01_hw.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/lib/core/devfs/01_hw.lua
@@ -1,10 +1,9 @@
 local comp = require("component")
-local fs = require("filesystem")
 local text = require("text")
 
 local dcache = {}
 local pcache = {}
-local adapter_pwd = "/opt/core/devfs/adapters/"
+local adapter_pwd = "/lib/core/devfs/adapters/"
 
 local adapter_api = {}
 
diff --git a/src/main/resources/assets/opencomputers/loot/openos/opt/core/devfs/02_utils.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/core/devfs/02_utils.lua
similarity index 100%
rename from src/main/resources/assets/opencomputers/loot/openos/opt/core/devfs/02_utils.lua
rename to src/main/resources/assets/opencomputers/loot/openos/lib/core/devfs/02_utils.lua
diff --git a/src/main/resources/assets/opencomputers/loot/openos/opt/core/devfs/adapters/computer.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/core/devfs/adapters/computer.lua
similarity index 100%
rename from src/main/resources/assets/opencomputers/loot/openos/opt/core/devfs/adapters/computer.lua
rename to src/main/resources/assets/opencomputers/loot/openos/lib/core/devfs/adapters/computer.lua
diff --git a/src/main/resources/assets/opencomputers/loot/openos/opt/core/devfs/adapters/eeprom.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/core/devfs/adapters/eeprom.lua
similarity index 100%
rename from src/main/resources/assets/opencomputers/loot/openos/opt/core/devfs/adapters/eeprom.lua
rename to src/main/resources/assets/opencomputers/loot/openos/lib/core/devfs/adapters/eeprom.lua
diff --git a/src/main/resources/assets/opencomputers/loot/openos/opt/core/devfs/adapters/filesystem.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/core/devfs/adapters/filesystem.lua
similarity index 100%
rename from src/main/resources/assets/opencomputers/loot/openos/opt/core/devfs/adapters/filesystem.lua
rename to src/main/resources/assets/opencomputers/loot/openos/lib/core/devfs/adapters/filesystem.lua
diff --git a/src/main/resources/assets/opencomputers/loot/openos/opt/core/devfs/adapters/gpu.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/core/devfs/adapters/gpu.lua
similarity index 100%
rename from src/main/resources/assets/opencomputers/loot/openos/opt/core/devfs/adapters/gpu.lua
rename to src/main/resources/assets/opencomputers/loot/openos/lib/core/devfs/adapters/gpu.lua
diff --git a/src/main/resources/assets/opencomputers/loot/openos/opt/core/devfs/adapters/internet.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/core/devfs/adapters/internet.lua
similarity index 100%
rename from src/main/resources/assets/opencomputers/loot/openos/opt/core/devfs/adapters/internet.lua
rename to src/main/resources/assets/opencomputers/loot/openos/lib/core/devfs/adapters/internet.lua
diff --git a/src/main/resources/assets/opencomputers/loot/openos/opt/core/devfs/adapters/modem.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/core/devfs/adapters/modem.lua
similarity index 100%
rename from src/main/resources/assets/opencomputers/loot/openos/opt/core/devfs/adapters/modem.lua
rename to src/main/resources/assets/opencomputers/loot/openos/lib/core/devfs/adapters/modem.lua
diff --git a/src/main/resources/assets/opencomputers/loot/openos/opt/core/devfs/adapters/screen.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/core/devfs/adapters/screen.lua
similarity index 100%
rename from src/main/resources/assets/opencomputers/loot/openos/opt/core/devfs/adapters/screen.lua
rename to src/main/resources/assets/opencomputers/loot/openos/lib/core/devfs/adapters/screen.lua
diff --git a/src/main/resources/assets/opencomputers/loot/openos/opt/core/device_labeling.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/core/device_labeling.lua
similarity index 100%
rename from src/main/resources/assets/opencomputers/loot/openos/opt/core/device_labeling.lua
rename to src/main/resources/assets/opencomputers/loot/openos/lib/core/device_labeling.lua
diff --git a/src/main/resources/assets/opencomputers/loot/openos/opt/core/full_filesystem.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/core/full_filesystem.lua
similarity index 100%
rename from src/main/resources/assets/opencomputers/loot/openos/opt/core/full_filesystem.lua
rename to src/main/resources/assets/opencomputers/loot/openos/lib/core/full_filesystem.lua
diff --git a/src/main/resources/assets/opencomputers/loot/openos/opt/core/full_keyboard.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/core/full_keyboard.lua
similarity index 100%
rename from src/main/resources/assets/opencomputers/loot/openos/opt/core/full_keyboard.lua
rename to src/main/resources/assets/opencomputers/loot/openos/lib/core/full_keyboard.lua
diff --git a/src/main/resources/assets/opencomputers/loot/openos/opt/core/full_ls.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/core/full_ls.lua
similarity index 100%
rename from src/main/resources/assets/opencomputers/loot/openos/opt/core/full_ls.lua
rename to src/main/resources/assets/opencomputers/loot/openos/lib/core/full_ls.lua
diff --git a/src/main/resources/assets/opencomputers/loot/openos/opt/core/full_sh.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/core/full_sh.lua
similarity index 100%
rename from src/main/resources/assets/opencomputers/loot/openos/opt/core/full_sh.lua
rename to src/main/resources/assets/opencomputers/loot/openos/lib/core/full_sh.lua
diff --git a/src/main/resources/assets/opencomputers/loot/openos/opt/core/full_text.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/core/full_text.lua
similarity index 100%
rename from src/main/resources/assets/opencomputers/loot/openos/opt/core/full_text.lua
rename to src/main/resources/assets/opencomputers/loot/openos/lib/core/full_text.lua
diff --git a/src/main/resources/assets/opencomputers/loot/openos/opt/core/full_transforms.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/core/full_transforms.lua
similarity index 100%
rename from src/main/resources/assets/opencomputers/loot/openos/opt/core/full_transforms.lua
rename to src/main/resources/assets/opencomputers/loot/openos/lib/core/full_transforms.lua
diff --git a/src/main/resources/assets/opencomputers/loot/openos/opt/core/full_tty.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/core/full_tty.lua
similarity index 100%
rename from src/main/resources/assets/opencomputers/loot/openos/opt/core/full_tty.lua
rename to src/main/resources/assets/opencomputers/loot/openos/lib/core/full_tty.lua
diff --git a/src/main/resources/assets/opencomputers/loot/openos/opt/core/install_basics.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/core/install_basics.lua
similarity index 99%
rename from src/main/resources/assets/opencomputers/loot/openos/opt/core/install_basics.lua
rename to src/main/resources/assets/opencomputers/loot/openos/lib/core/install_basics.lua
index 7e4c21be6..6673f1a76 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/opt/core/install_basics.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/lib/core/install_basics.lua
@@ -22,7 +22,7 @@ if options.help then
   return nil -- exit success
 end
 
-local utils_path = "/opt/core/install_utils.lua"
+local utils_path = "/lib/core/install_utils.lua"
 local utils
 
 local rootfs = fs.get("/")
diff --git a/src/main/resources/assets/opencomputers/loot/openos/opt/core/install_utils.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/core/install_utils.lua
similarity index 100%
rename from src/main/resources/assets/opencomputers/loot/openos/opt/core/install_utils.lua
rename to src/main/resources/assets/opencomputers/loot/openos/lib/core/install_utils.lua
diff --git a/src/main/resources/assets/opencomputers/loot/openos/opt/core/lua_shell.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/core/lua_shell.lua
similarity index 100%
rename from src/main/resources/assets/opencomputers/loot/openos/opt/core/lua_shell.lua
rename to src/main/resources/assets/opencomputers/loot/openos/lib/core/lua_shell.lua
diff --git a/src/main/resources/assets/opencomputers/loot/openos/opt/core/ro_wrapper.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/core/ro_wrapper.lua
similarity index 100%
rename from src/main/resources/assets/opencomputers/loot/openos/opt/core/ro_wrapper.lua
rename to src/main/resources/assets/opencomputers/loot/openos/lib/core/ro_wrapper.lua
diff --git a/src/main/resources/assets/opencomputers/loot/openos/lib/devfs.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/devfs.lua
index c1ef26203..66cbb26a5 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/lib/devfs.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/lib/devfs.lua
@@ -153,7 +153,7 @@ inject_dynamic_pairs = function(fsnode, path, bStoreUse)
   })
 end
 
-local label_lib = dofile("/opt/core/device_labeling.lua")
+local label_lib = dofile("/lib/core/device_labeling.lua")
 label_lib.loadRules()
 api.getDeviceLabel = label_lib.getDeviceLabel
 api.setDeviceLabel = label_lib.setDeviceLabel
@@ -163,7 +163,7 @@ function api.register(public_proxy)
   if registered then return end
   registered = true
 
-  local start_path = "/opt/core/devfs/"
+  local start_path = "/lib/core/devfs/"
   for starter in fs.list(start_path) do
     local full_path = start_path .. starter
     local _,matched = starter:gsub("%.lua$","")
diff --git a/src/main/resources/assets/opencomputers/loot/openos/lib/keyboard.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/keyboard.lua
index 910a5ca94..70d86893f 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/lib/keyboard.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/lib/keyboard.lua
@@ -82,6 +82,6 @@ end
 
 -------------------------------------------------------------------------------
 
-require("package").delay(keyboard.keys, "/opt/core/full_keyboard.lua")
+require("package").delay(keyboard.keys, "/lib/core/full_keyboard.lua")
 
 return keyboard
diff --git a/src/main/resources/assets/opencomputers/loot/openos/lib/sh.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/sh.lua
index 3b699607f..1f923161e 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/lib/sh.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/lib/sh.lua
@@ -272,6 +272,6 @@ function sh.hintHandler(full_line, cursor)
   return sh.internal.hintHandlerImpl(full_line, cursor)
 end
 
-require("package").delay(sh, "/opt/core/full_sh.lua")
+require("package").delay(sh, "/lib/core/full_sh.lua")
 
 return sh
diff --git a/src/main/resources/assets/opencomputers/loot/openos/lib/text.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/text.lua
index 1f527ebbb..7c77f4041 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/lib/text.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/lib/text.lua
@@ -89,10 +89,10 @@ function text.internal.words(input, options)
   local show_escapes = options.show_escapes
   local qr = nil
   quotes = quotes or {{"'","'",true},{'"','"'},{'`','`'}}
-  local function append(dst, txt, qr)
+  local function append(dst, txt, _qr)
     local size = #dst
-    if size == 0 or dst[size].qr ~= qr then
-      dst[size+1] = {txt=txt, qr=qr}
+    if size == 0 or dst[size].qr ~= _qr then
+      dst[size+1] = {txt=txt, qr=_qr}
     else
       dst[size].txt = dst[size].txt..txt
     end
@@ -144,6 +144,6 @@ function text.internal.words(input, options)
   return tokens
 end
 
-require("package").delay(text, "/opt/core/full_text.lua")
+require("package").delay(text, "/lib/core/full_text.lua")
 
 return text
diff --git a/src/main/resources/assets/opencomputers/loot/openos/lib/transforms.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/transforms.lua
index 11e859564..f34a6b6c7 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/lib/transforms.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/lib/transforms.lua
@@ -70,6 +70,6 @@ function lib.concat(...)
   return r
 end
 
-require("package").delay(lib, "/opt/core/full_transforms.lua")
+require("package").delay(lib, "/lib/core/full_transforms.lua")
 
 return lib
diff --git a/src/main/resources/assets/opencomputers/loot/openos/lib/tty.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/tty.lua
index 8d708282b..c074b8f7d 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/lib/tty.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/lib/tty.lua
@@ -215,14 +215,14 @@ function tty.internal.build_vertical_reader()
       end
     end,
     clear_tail = function(_)
-      local oi, width, height, dx, dy, ox, oy = _.index, tty.getViewport()
+      local oi, width, _, dx, dy, ox, oy = _.index, tty.getViewport()
       _:move(math.huge)
       _:move(-1)
-      local ex, ey = tty.getCursor()
+      local _, ey = tty.getCursor()
       tty.setCursor(ox, oy)
       _.index = oi
-      local x = oy == ey and ox or 1
-      tty.gpu().fill(x + dx, ey + dy, width - x + 1, 1, " ")
+      local cx = oy == ey and ox or 1
+      tty.gpu().fill(cx + dx, ey + dy, width - cx + 1, 1, " ")
     end,
     update = function(_, arg)
       local s1, s2 = tty.internal.split(_)
@@ -337,7 +337,7 @@ function tty.drawText(value, nowrap)
   local uptime = computer.uptime
   local last_sleep = uptime()
   local last_index = 1
-  local width, height, dx, dy = tty.getViewport()
+  local width, _, dx, dy = tty.getViewport()
   while true do
     if uptime() - last_sleep > 1 then
       os.sleep(0)
@@ -493,6 +493,6 @@ function tty.scroll(number)
   return lines
 end
 
-require("package").delay(tty, "/opt/core/full_tty.lua")
+require("package").delay(tty, "/lib/core/full_tty.lua")
 
 return tty

From 5d81f515703835509b7f6bbd3102b89572d27321 Mon Sep 17 00:00:00 2001
From: payonel <payonel@hotmail.com>
Date: Sun, 25 Jun 2017 10:03:15 -0700
Subject: [PATCH 5/9] rename _ as self in tty cursor as it should be and move
 tty.write to term.write

---
 .../opencomputers/loot/openos/bin/sh.lua      |  2 +-
 .../loot/openos/lib/core/lua_shell.lua        | 15 ++--
 .../opencomputers/loot/openos/lib/term.lua    | 11 +++
 .../opencomputers/loot/openos/lib/tty.lua     | 77 ++++++++-----------
 4 files changed, 52 insertions(+), 53 deletions(-)

diff --git a/src/main/resources/assets/opencomputers/loot/openos/bin/sh.lua b/src/main/resources/assets/opencomputers/loot/openos/bin/sh.lua
index aa8d94538..f62987d1f 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/bin/sh.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/bin/sh.lua
@@ -28,7 +28,7 @@ if #args == 0 and (io.stdin.tty or options.i) and not options.c then
     local gpu = tty.gpu()
     while tty.isAvailable() do
       local foreground = gpu.setForeground(0xFF0000)
-      tty.write(sh.expand(os.getenv("PS1") or "$ "))
+      io.write(sh.expand(os.getenv("PS1") or "$ "))
       gpu.setForeground(foreground)
       tty.setCursorBlink(true)
       local command = tty.read(history)
diff --git a/src/main/resources/assets/opencomputers/loot/openos/lib/core/lua_shell.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/core/lua_shell.lua
index 053f2ae48..7a29d3300 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/lib/core/lua_shell.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/lib/core/lua_shell.lua
@@ -1,6 +1,5 @@
 local package = require("package")
 local tty = require("tty")
-local process = require("process")
 
 local gpu = tty.gpu()
 
@@ -92,16 +91,16 @@ function read_handler.hint(line, index)
 end
 
 gpu.setForeground(0xFFFFFF)
-tty.write(_VERSION .. " Copyright (C) 1994-2017 Lua.org, PUC-Rio\n")
+io.write(_VERSION .. " Copyright (C) 1994-2017 Lua.org, PUC-Rio\n")
 gpu.setForeground(0xFFFF00)
-tty.write("Enter a statement and hit enter to evaluate it.\n")
-tty.write("Prefix an expression with '=' to show its value.\n")
-tty.write("Press Ctrl+D to exit the interpreter.\n")
+io.write("Enter a statement and hit enter to evaluate it.\n")
+io.write("Prefix an expression with '=' to show its value.\n")
+io.write("Press Ctrl+D to exit the interpreter.\n")
 gpu.setForeground(0xFFFFFF)
 
 while tty.isAvailable() do
   local foreground = gpu.setForeground(0x00FF00)
-  tty.write(env._PROMPT)
+  io.write(env._PROMPT)
   gpu.setForeground(foreground)
   local command = tty.read(read_handler)
   if not command then -- eof
@@ -122,10 +121,10 @@ while tty.isAvailable() do
       io.stderr:write(tostring(result[2]) .. "\n")
     else
       for i = 2, result.n do
-        tty.write(require("serialization").serialize(result[i], true) .. "\t", true)
+        io.write(require("serialization").serialize(result[i], true) .. "\t", true)
       end
       if tty.getCursor() > 1 then
-        tty.write("\n")
+        io.write("\n")
       end
     end
   else
diff --git a/src/main/resources/assets/opencomputers/loot/openos/lib/term.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/term.lua
index cd1021d21..826d96d03 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/lib/term.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/lib/term.lua
@@ -182,6 +182,17 @@ local function inject_mask(cursor, dobreak, pwchar)
   end
 end
 
+-- cannot use term.write = io.write because io.write invokes metatable
+function term.write(value, wrap)
+  local stdout = io.output()
+  local stream = stdout and stdout.stream
+  local previous_nowrap = stream.nowrap
+  stream.nowrap = wrap == false
+  stdout:write(value)
+  stdout:flush()
+  stream.nowrap = previous_nowrap
+end
+
 function term.read(history, dobreak, hint, pwchar, filter)
   if not io.stdin.tty then
     return io.read("*L")
diff --git a/src/main/resources/assets/opencomputers/loot/openos/lib/tty.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/tty.lua
index c074b8f7d..7a2d1b1b4 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/lib/tty.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/lib/tty.lua
@@ -192,16 +192,16 @@ function tty.internal.build_vertical_reader()
     index = 0,
     data = "",
     sy = 0,
-    scroll = function(_)
-      _.sy = _.sy + tty.scroll()
+    scroll = function(self)
+      self.sy = self.sy + tty.scroll()
     end,
-    move = function(_,n)
+    move = function(self, n)
       local win = tty.window
-      _.index = math.min(math.max(0,_.index + n), unicode.len(_.data))
-      local s1, s2 = tty.internal.split(_)
+      self.index = math.min(math.max(0, self.index + n), unicode.len(self.data))
+      local s1, s2 = tty.internal.split(self)
       s2 = unicode.sub(s2.." ", 1, 1)
-      local data_remaining = ("_"):rep(_.promptx - 1)..s1..s2
-      win.y = _.prompty - _.sy
+      local data_remaining = ("_"):rep(self.promptx - 1)..s1..s2
+      win.y = self.prompty - self.sy
       while true do
         local wlen_remaining = unicode.wlen(data_remaining)
         if wlen_remaining > win.width then
@@ -214,53 +214,53 @@ function tty.internal.build_vertical_reader()
         end
       end
     end,
-    clear_tail = function(_)
-      local oi, width, _, dx, dy, ox, oy = _.index, tty.getViewport()
-      _:move(math.huge)
-      _:move(-1)
+    clear_tail = function(self)
+      local oi, width, _, dx, dy, ox, oy = self.index, tty.getViewport()
+      self:move(math.huge)
+      self:move(-1)
       local _, ey = tty.getCursor()
       tty.setCursor(ox, oy)
-      _.index = oi
+      self.index = oi
       local cx = oy == ey and ox or 1
       tty.gpu().fill(cx + dx, ey + dy, width - cx + 1, 1, " ")
     end,
-    update = function(_, arg)
-      local s1, s2 = tty.internal.split(_)
+    update = function(self, arg)
+      local s1, s2 = tty.internal.split(self)
       if type(arg) == "string" then
-        _.data = s1 .. arg .. s2
-        _.index = _.index + unicode.len(arg)
-        _:draw(arg)
+        self.data = s1 .. arg .. s2
+        self.index = self.index + unicode.len(arg)
+        self:draw(arg)
       else -- number
         if arg < 0 then
           -- backspace? ignore if at start
-          if _.index <= 0 then return end
-          _:move(arg)
+          if self.index <= 0 then return end
+          self:move(arg)
           s1 = unicode.sub(s1, 1, -1 + arg)
         else
           -- forward? ignore if at end
-          if _.index >= unicode.len(_.data) then return end
+          if self.index >= unicode.len(self.data) then return end
           s2 = unicode.sub(s2, 1 + arg)
         end
-        _:clear_tail()
-        _.data = s1 .. s2
+        self:clear_tail()
+        self.data = s1 .. s2
       end
 
       -- redraw suffix
       if s2 ~= "" then
-        local ps, px, py = _.sy, tty.getCursor()
-        _:draw(s2)
-        tty.setCursor(px, py - (_.sy - ps))
+        local ps, px, py = self.sy, tty.getCursor()
+        self:draw(s2)
+        tty.setCursor(px, py - (self.sy - ps))
       end
     end,
-    clear = function(_)
-      _:move(-math.huge)
-      _:draw((" "):rep(unicode.wlen(_.data)))
-      _:move(-math.huge)
-      _.index = 0
-      _.data = ""
+    clear = function(self)
+      self:move(-math.huge)
+      self:draw((" "):rep(unicode.wlen(self.data)))
+      self:move(-math.huge)
+      self.index = 0
+      self.data = ""
     end,
-    draw = function(_, text)
-      _.sy = _.sy + tty.drawText(text)
+    draw = function(self, text)
+      self.sy = self.sy + tty.drawText(text)
     end
   }
 end
@@ -306,17 +306,6 @@ function tty.read(handler, cursor)
   end
 end
 
--- cannot use tty.write = io.write because io.write invokes metatable
-function tty.write(value, wrap)
-  local stdout = io.output()
-  local stream = stdout and stdout.stream
-  local previous_nowrap = stream.nowrap
-  stream.nowrap = wrap == false
-  stdout:write(value)
-  stdout:flush()
-  stream.nowrap = previous_nowrap
-end
-
 function tty.getCursor()
   local window = tty.window
   return window.x, window.y

From 83a37af8cbdbe43aa4ac73eac43d4c6169f065ad Mon Sep 17 00:00:00 2001
From: payonel <payonel@hotmail.com>
Date: Sun, 25 Jun 2017 16:18:16 -0700
Subject: [PATCH 6/9] woops - lua_shell using io.write doesn't need to pass
 true to wrap

---
 .../assets/opencomputers/loot/openos/lib/core/lua_shell.lua     | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/resources/assets/opencomputers/loot/openos/lib/core/lua_shell.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/core/lua_shell.lua
index 7a29d3300..64a2bdcf1 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/lib/core/lua_shell.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/lib/core/lua_shell.lua
@@ -121,7 +121,7 @@ while tty.isAvailable() do
       io.stderr:write(tostring(result[2]) .. "\n")
     else
       for i = 2, result.n do
-        io.write(require("serialization").serialize(result[i], true) .. "\t", true)
+        io.write(require("serialization").serialize(result[i], true) .. "\t")
       end
       if tty.getCursor() > 1 then
         io.write("\n")

From c988b44f669d49b489b98570e643c1e7b0baf5d4 Mon Sep 17 00:00:00 2001
From: payonel <payonel@hotmail.com>
Date: Sun, 25 Jun 2017 22:58:54 -0700
Subject: [PATCH 7/9] openos 1.6.6

More memory savings, significant boot time savings

**Memory Savings**
The largest library in terms of cost in bytes in 1.6.5 was /lib/filesystem. Most of this library is not needed for boot, and in 1.6.6 the library is half loaded for boot with a delay load of the rest of the library when needed. There are also other minor memory improvements, see **Changes** for details

**Boot Time**
This update also introduces a newly written /bin/sh.lua that takes advantage of a common stdio system. This work was primary done to reduce memory needed to load the shell. However, during development of a simplified /bin/sh, I found that the /bin/source, /etc/profile, and /home/.shrc feature added to openos 1.6 had a significant boot time cost. I began optimizing /bin/source heavily and found that I could not make sufficient speed improvements due to the nature of how shell commands execute. Thus /etc/profile has been removed in favor of /etc/profile.lua, a script that sets up the environment the same but as a lua script. ~/.shrc is still honored if it exists on a system, and is sourced (/bin/source) as a set of shell commands. This change speeds up boot time from floppy by 3s, and on hdds by 1s.

**Possible Breaking Changes**
/etc/profile has been moved to /etc/profile.lua, but /home/.shrc is still sourced as shell script commands.

**Changes**
* /bin/sh.lua rewrite that takes advantage of standard io and uses the new /etc/profile.lua shaving 6s off boot time
* /bin/source.lua improve performance by reducing the number of processes created
* move /etc/profile to /etc/profile.lua and recode the actions in lua-form.
* move all ~/.shrc actions to /etc/profile.lua for performance reasons
* move motd to start of /etc/profile.lua to get the shell display as soon as possible
* update greetings that referenced /etc/profile to properly refer to /etc/profile.lua now
* update openos version to 1.6.6 to respect the impact of these changes
---
 .../opencomputers/loot/openos/bin/alias.lua   |  4 +-
 .../opencomputers/loot/openos/bin/more.lua    |  5 +-
 .../opencomputers/loot/openos/bin/sh.lua      | 62 +++++++------------
 .../opencomputers/loot/openos/bin/source.lua  | 33 +++++-----
 .../loot/openos/boot/00_base.lua              |  4 +-
 .../opencomputers/loot/openos/etc/profile     | 26 --------
 .../opencomputers/loot/openos/etc/profile.lua | 38 ++++++++++++
 .../opencomputers/loot/openos/home/.shrc      |  5 --
 .../loot/openos/lib/core/boot.lua             |  2 +-
 .../loot/openos/lib/core/full_ls.lua          |  8 +--
 .../opencomputers/loot/openos/lib/shell.lua   |  4 +-
 .../loot/openos/usr/misc/greetings.txt        |  2 +-
 12 files changed, 90 insertions(+), 103 deletions(-)
 delete mode 100644 src/main/resources/assets/opencomputers/loot/openos/etc/profile
 create mode 100644 src/main/resources/assets/opencomputers/loot/openos/etc/profile.lua

diff --git a/src/main/resources/assets/opencomputers/loot/openos/bin/alias.lua b/src/main/resources/assets/opencomputers/loot/openos/bin/alias.lua
index a9594a447..4e25b6d6e 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/bin/alias.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/bin/alias.lua
@@ -4,7 +4,7 @@ local args, options = shell.parse(...)
 local ec, error_prefix = 0, "alias:"
 
 if options.help then
-  print(string.format("Usage: alias: [name[=value] ... ]", cmd_name))
+  print(string.format("Usage: alias: [name[=value] ... ]"))
   return
 end
 
@@ -53,7 +53,7 @@ if not next(args) then -- no args
     print(string.format("alias %s='%s'", k, v))
   end
 else
-  for k,v in pairs(args) do
+  for _,v in ipairs(args) do
     checkArg(1,v,"string")
     handlePair(splitPair(v))
   end
diff --git a/src/main/resources/assets/opencomputers/loot/openos/bin/more.lua b/src/main/resources/assets/opencomputers/loot/openos/bin/more.lua
index af1150c1d..dfc3d55f6 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/bin/more.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/bin/more.lua
@@ -2,7 +2,6 @@ local keyboard = require("keyboard")
 local shell = require("shell")
 local term = require("term") -- TODO use tty and cursor position instead of global area and gpu
 local text = require("text")
-local unicode = require("unicode")
 
 if not io.output().tty then
   return loadfile(shell.resolve("cat", "lua"), "bt", _G)(...)
@@ -28,7 +27,7 @@ end
 
 local line = nil
 local function readlines(num)
-  local x, y, w, h = term.getGlobalArea()
+  local _, _, w, h = term.getGlobalArea()
   num = num or (h - 1)
   for _ = 1, num do
     if not line then
@@ -52,7 +51,7 @@ while true do
     return
   end
   while true do
-    local event, address, char, code = term.pull("key_down")
+    local _, _, _, code = term.pull("key_down")
     if code == keyboard.keys.q then
       term.clearLine()
       return
diff --git a/src/main/resources/assets/opencomputers/loot/openos/bin/sh.lua b/src/main/resources/assets/opencomputers/loot/openos/bin/sh.lua
index f62987d1f..337656e0a 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/bin/sh.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/bin/sh.lua
@@ -5,70 +5,50 @@ local text = require("text")
 local sh = require("sh")
 
 local input = table.pack(...)
-local args, options = shell.parse(select(3,table.unpack(input)))
+local args = shell.parse(select(3,table.unpack(input)))
 if input[2] then
   table.insert(args, 1, input[2])
 end
 
 local history = {hint = sh.hintHandler}
 shell.prime()
+local update_gpu = io.output().tty
+local interactive = io.input().tty
+local foreground
 
-if #args == 0 and (io.stdin.tty or options.i) and not options.c then
-  -- interactive shell.
-  -- source profile
-  if not tty.isAvailable() then event.pull("term_available") end
-  loadfile(shell.resolve("source","lua"))("/etc/profile")
+if #args == 0 then
   while true do
-    if not tty.isAvailable() then -- don't clear unless we lost the term
+    if update_gpu then
       while not tty.isAvailable() do
         event.pull("term_available")
       end
-      tty.clear()
-    end
-    local gpu = tty.gpu()
-    while tty.isAvailable() do
-      local foreground = gpu.setForeground(0xFF0000)
-      io.write(sh.expand(os.getenv("PS1") or "$ "))
-      gpu.setForeground(foreground)
-      tty.setCursorBlink(true)
-      local command = tty.read(history)
-      if not command then
-        if command == false then
-          break -- soft interrupt
-        end
-        io.write("exit\n") -- pipe closed
-        return -- eof
+      if not foreground and interactive then -- first time run AND interactive
+        dofile("/etc/profile.lua")
       end
+      foreground = tty.gpu().setForeground(0xFF0000)
+      io.write(sh.expand(os.getenv("PS1") or "$ "))
+      tty.gpu().setForeground(foreground)
+      tty.setCursorBlink(true)
+    end
+    local command = tty.read(history)
+    if command then
       command = text.trim(command)
       if command == "exit" then
         return
       elseif command ~= "" then
         local result, reason = sh.execute(_ENV, command)
-        if tty.getCursor() > 1 then
-          print()
+        if update_gpu and tty.getCursor() > 1 then
+          io.write("\n")
         end
         if not result then
           io.stderr:write((reason and tostring(reason) or "unknown error") .. "\n")
         end
       end
-    end
-  end
-elseif #args == 0 and not io.stdin.tty then
-  while true do
-    io.write(sh.expand(os.getenv("PS1") or "$ "))
-    local command = io.read("*l")
-    if not command then
-      command = "exit"
-      io.write(command,"\n")
-    end
-    command = text.trim(command)
-    if command == "exit" then
-      return
-    elseif command ~= "" then
-      local result, reason = os.execute(command)
-      if not result then
-        io.stderr:write((reason and tostring(reason) or "unknown error") .. "\n")
+    elseif command == nil then -- command==false is a soft interrupt, ignore it
+      if interactive then
+        io.write("exit\n") -- pipe closed
       end
+      return -- eof
     end
   end
 else
diff --git a/src/main/resources/assets/opencomputers/loot/openos/bin/source.lua b/src/main/resources/assets/opencomputers/loot/openos/bin/source.lua
index a1b040716..2b1cc20ec 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/bin/source.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/bin/source.lua
@@ -1,6 +1,5 @@
 local shell = require("shell")
-local fs = require("filesystem")
-local sh = require("sh")
+local process = require("process")
 
 local args, options = shell.parse(...)
 
@@ -9,23 +8,25 @@ if #args ~= 1 then
   return 1
 end
 
-local file, reason = io.open(args[1], "r")
+local file, open_reason = io.open(args[1], "r")
 
 if not file then
   if not options.q then
-    io.stderr:write(string.format("could not source %s because: %s\n", args[1], reason));
+    io.stderr:write(string.format("could not source %s because: %s\n", args[1], open_reason));
   end
   return 1
-else
-  local status, reason = xpcall(function()
-    repeat
-      local line = file:read()
-      if line then
-        sh.execute(nil, line)
-      end
-    until not line
-  end, function(msg) return {msg, debug.traceback()} end)
-
-  file:close()
-  if not status and reason then assert(false, tostring(reason[1]) .."\n".. tostring(reason[2])) end
 end
+
+local current_data = process.info().data
+
+local source_proc = process.load((assert(os.getenv("SHELL"), "no $SHELL set")))
+local source_data = process.list[source_proc].data
+source_data.aliases = current_data.aliases -- hacks to propogate sub shell env changes
+source_data.vars = current_data.vars
+source_data.io[0] = file -- set stdin to the file
+if options.q then
+  source_data.io[1] = {tty=false,write=function()end} -- set stdin to the file
+end
+process.internal.continue(source_proc)
+
+file:close() -- should have closed when the process closed, but just to be sure
diff --git a/src/main/resources/assets/opencomputers/loot/openos/boot/00_base.lua b/src/main/resources/assets/opencomputers/loot/openos/boot/00_base.lua
index 76c4c04ae..c8a56ac4b 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/boot/00_base.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/boot/00_base.lua
@@ -2,9 +2,9 @@ function loadfile(filename, ...)
   if filename:sub(1,1) ~= "/" then
     filename = (os.getenv("PWD") or "/") .. "/" .. filename
   end
-  local handle, reason = require("filesystem").open(filename)
+  local handle, open_reason = require("filesystem").open(filename)
   if not handle then
-    return nil, reason
+    return nil, open_reason
   end
   local buffer = {}
   while true do
diff --git a/src/main/resources/assets/opencomputers/loot/openos/etc/profile b/src/main/resources/assets/opencomputers/loot/openos/etc/profile
deleted file mode 100644
index a2a387f00..000000000
--- a/src/main/resources/assets/opencomputers/loot/openos/etc/profile
+++ /dev/null
@@ -1,26 +0,0 @@
-alias dir=ls
-alias move=mv
-alias rename=mv
-alias copy=cp
-alias del=rm
-alias md=mkdir
-alias cls=clear
-alias rs=redstone
-alias view=edit\ -r
-alias help=man
-alias cp=cp\ -i
-
-set EDITOR=/bin/edit
-set HISTSIZE=10
-set HOME=/home
-set IFS=\ 
-set MANPATH=/usr/man:.
-set PAGER=/bin/more
-set PS1='$HOSTNAME$HOSTNAME_SEPARATOR$PWD # '
-set PWD=/
-set LS_COLORS="{FILE=0xFFFFFF,DIR=0x66CCFF,LINK=0xFFAA00,['*.lua']=0x00FF00}"
-
-cd $HOME
-clear
-/etc/motd
-source $HOME/.shrc -q
diff --git a/src/main/resources/assets/opencomputers/loot/openos/etc/profile.lua b/src/main/resources/assets/opencomputers/loot/openos/etc/profile.lua
new file mode 100644
index 000000000..400f3485e
--- /dev/null
+++ b/src/main/resources/assets/opencomputers/loot/openos/etc/profile.lua
@@ -0,0 +1,38 @@
+local shell = require("shell")
+local tty = require("tty")
+local fs = require("filesystem")
+
+tty.clear()
+dofile("/etc/motd")
+
+shell.setAlias("dir", "ls")
+shell.setAlias("move", "mv")
+shell.setAlias("rename", "mv")
+shell.setAlias("copy", "cp")
+shell.setAlias("del", "rm")
+shell.setAlias("md", "mkdir")
+shell.setAlias("cls", "clear")
+shell.setAlias("rs", "redstone")
+shell.setAlias("view", "edit -r")
+shell.setAlias("help", "man")
+shell.setAlias("cp", "cp -i")
+shell.setAlias("l", "ls -lhp")
+shell.setAlias("..", "cd ..")
+shell.setAlias("df", "df -h")
+shell.setAlias("grep", "grep --color")
+
+os.setenv("EDITOR", "/bin/edit")
+os.setenv("HISTSIZE", "10")
+os.setenv("HOME", "/home")
+os.setenv("IFS", " ")
+os.setenv("MANPATH", "/usr/man:.")
+os.setenv("PAGER", "/bin/more")
+os.setenv("PS1", "$HOSTNAME$HOSTNAME_SEPARATOR$PWD # ")
+os.setenv("LS_COLORS", "{FILE=0xFFFFFF,DIR=0x66CCFF,LINK=0xFFAA00,['*.lua']=0x00FF00}")
+
+shell.setWorkingDirectory(os.getenv("HOME"))
+
+local home_shrc = shell.resolve(".shrc")
+if fs.exists(home_shrc) then
+  loadfile(shell.resolve("source", "lua"))(home_shrc, "-q")
+end
diff --git a/src/main/resources/assets/opencomputers/loot/openos/home/.shrc b/src/main/resources/assets/opencomputers/loot/openos/home/.shrc
index e9e55efa7..e69de29bb 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/home/.shrc
+++ b/src/main/resources/assets/opencomputers/loot/openos/home/.shrc
@@ -1,5 +0,0 @@
-alias l="ls -lhp"
-alias ..="cd .."
-alias df="df -h"
-
-alias grep="grep --color"
diff --git a/src/main/resources/assets/opencomputers/loot/openos/lib/core/boot.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/core/boot.lua
index 7ad88d429..ed45c023a 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/lib/core/boot.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/lib/core/boot.lua
@@ -1,7 +1,7 @@
 -- called from /init.lua
 local raw_loadfile = ...
 
-_G._OSVERSION = "OpenOS 1.6.5"
+_G._OSVERSION = "OpenOS 1.6.6"
 
 local component = component
 local computer = computer
diff --git a/src/main/resources/assets/opencomputers/loot/openos/lib/core/full_ls.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/core/full_ls.lua
index 8f6524305..5e7eb6bec 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/lib/core/full_ls.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/lib/core/full_ls.lua
@@ -253,7 +253,7 @@ local function display(names)
       max_size_width = math.max(max_size_width, formatSize(info.size):len())
       max_date_width = math.max(max_date_width, formatDate(info.time):len())
     end
-    mt.__index = function(tbl, index)
+    mt.__index = function(_, index)
       local info = stat(names, index)
       local file_type = info.isLink and 'l' or info.isDir and 'd' or 'f'
       local link_target = info.isLink and string.format(" -> %s", info.link:gsub("/+$", "") .. (info.isDir and "/" or "")) or ""
@@ -267,7 +267,7 @@ local function display(names)
     end
   elseif ops["1"] or not fOut then
     lines.n = #names
-    mt.__index = function(tbl, index)
+    mt.__index = function(_, index)
       local info = stat(names, index)
       return {{color = colorize(info), name = info.name}}
     end
@@ -302,10 +302,10 @@ local function display(names)
       end
     end
     lines.n = items_per_column
-    mt.__index=function(tbl, line_index)
+    mt.__index=function(_, line_index)
       return setmetatable({},{
         __len=function()return num_columns end,
-        __index=function(tbl, column_index)
+        __index=function(_, column_index)
           local ri = real(column_index, line_index)
           if not ri then return end
           local info = stat(names, ri)
diff --git a/src/main/resources/assets/opencomputers/loot/openos/lib/shell.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/shell.lua
index ea536a71a..0a9dc2e9a 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/lib/shell.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/lib/shell.lua
@@ -18,11 +18,11 @@ function shell.getShell()
   if shells[shellName] then
     return shells[shellName]
   end
-  local sh, reason = loadfile(shellName)
+  local sh, load_reason = loadfile(shellName)
   if sh then
     shells[shellName] = sh
   end
-  return sh, reason
+  return sh, load_reason
 end
 
 -------------------------------------------------------------------------------
diff --git a/src/main/resources/assets/opencomputers/loot/openos/usr/misc/greetings.txt b/src/main/resources/assets/opencomputers/loot/openos/usr/misc/greetings.txt
index 1ef0905a9..e645e68ea 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/usr/misc/greetings.txt
+++ b/src/main/resources/assets/opencomputers/loot/openos/usr/misc/greetings.txt
@@ -22,7 +22,7 @@ Many component methods have a short documentation - use `=component.componentNam
 You can get a list of all attached components using the `components` program.
 If you encounter out of memory errors, throw more RAM at your computer.
 Have you tried turning it off and on again?
-To disable this greeting, install OpenOS to a writeable medium and remove the `/etc/motd` line from `/etc/profile`.
+To disable this greeting, install OpenOS to a writeable medium and remove the `/etc/motd` line from `/etc/profile.lua`.
 Did you know OpenComputers has a forum? No? Well, it's at https://oc.cil.li/.
 Please report bugs on the Github issue tracker, thank you!
 Beware of cycles when building networks, or you may get duplicate messages!

From e57d763f3a3c212f871763e40d2ef13a06382247 Mon Sep 17 00:00:00 2001
From: payonel <payonel@hotmail.com>
Date: Sun, 25 Jun 2017 23:31:30 -0700
Subject: [PATCH 8/9] some install fixes

---
 .../opencomputers/loot/openos/lib/core/install_basics.lua  | 7 ++++---
 .../opencomputers/loot/openos/lib/core/install_utils.lua   | 2 +-
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/main/resources/assets/opencomputers/loot/openos/lib/core/install_basics.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/core/install_basics.lua
index 6673f1a76..a193b7cdf 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/lib/core/install_basics.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/lib/core/install_basics.lua
@@ -64,7 +64,7 @@ local targets = {}
 local devices = {}
 
 for dev, path in fs.mounts() do
-  devices[dev] = path
+  devices[dev] = devices[dev] and #devices[dev] < #path and devices[dev] or path
 end
 
 devices[fs.get("/dev/") or false] = nil
@@ -81,6 +81,7 @@ for dev, path in pairs(devices) do
       os.exit(1)
     end
   elseif specified or
+    not (source_filter and address:find(source_filter, 1, true) == 1) and -- specified for source
     not target_filter and
     address ~= tmpAddress then
     table.insert(targets, {dev=dev, path=install_path, specified=specified})
@@ -156,8 +157,8 @@ local cp_args =
 
 local source_display = options.label or source.dev.getLabel() or source.path
 local special_target = ""
-if #targets > 1 or target_filter then
-  special_target = " to " .. cp_args[3]
+if #targets > 1 or target_filter or source_filter then
+  special_target = " to " .. cp_args[4]
 end
 
 io.write("Install " .. source_display .. special_target .. "? [Y/n] ")
diff --git a/src/main/resources/assets/opencomputers/loot/openos/lib/core/install_utils.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/core/install_utils.lua
index 557f6e521..0e376abfd 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/lib/core/install_utils.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/lib/core/install_utils.lua
@@ -13,7 +13,7 @@ local function select_prompt(devs, prompt)
   for i = 1, num_devs do
     local src = devs[i]
     local dev = src.dev
-    local selection_label = src.prop.label or dev.getLabel()
+    local selection_label = (src.prop or {}).label or dev.getLabel()
     if selection_label then
       selection_label = string.format("%s (%s...)", selection_label, dev.address:sub(1, 8))
     else

From 0c595ddda7e99c3aade6bdf1b9bbe96333125dcd Mon Sep 17 00:00:00 2001
From: payonel <payonel@hotmail.com>
Date: Mon, 26 Jun 2017 09:24:25 -0700
Subject: [PATCH 9/9] remove needless not nots

---
 .../resources/assets/opencomputers/loot/openos/lib/tty.lua    | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/main/resources/assets/opencomputers/loot/openos/lib/tty.lua b/src/main/resources/assets/opencomputers/loot/openos/lib/tty.lua
index 7a2d1b1b4..4462eac63 100644
--- a/src/main/resources/assets/opencomputers/loot/openos/lib/tty.lua
+++ b/src/main/resources/assets/opencomputers/loot/openos/lib/tty.lua
@@ -25,8 +25,8 @@ local function ctrl_movement(cursor, dir)
   local start=index+dir+1
   for i=start,last,dir do
     local a,b = unicode.sub(data, i-1, i-1), unicode.sub(data, i, i)
-    a = a == "" or not not a:find("%s")
-    b = b == "" or not not b:find("%s")
+    a = a == "" or a:find("%s")
+    b = b == "" or b:find("%s")
     if a and not b then return i - (index + 1) end
   end
   return last - index