diff --git a/repackjre.sh b/repackjre.sh
new file mode 100644
index 0000000..1a240fe
--- /dev/null
+++ b/repackjre.sh
@@ -0,0 +1,35 @@
+## Usage:
+## ./repackjre.sh [path_to_normal_jre_tarballs] [output_path]
+
+# set args
+export in="$1"
+export out="$2"
+
+# set working dirs
+work="$in/work"
+work1="$in/work1"
+
+# make sure paths exist
+mkdir -p $work
+mkdir -p $work1
+mkdir -p "$out"
+
+# here comes a not-so-complicated functions to easily make desired arch
+## Usage: makearch [jre_libs_dir_name] [name_in_tarball]
+makearch () { echo "Making $2..."; cd "$work"; tar xf $(ls "$in/jre8-$2-*release.tar.xz") > /dev/null 2>&1; mv bin $work1/;  mkdir -p $work1/lib; mv lib/$1 $work1/lib/; mv lib/jexec $work1/lib/; tar cJf bin-$2.tar.xz -C $work1 . > /dev/null 2>&1; mv bin-$2.tar.xz "$out/"; rm -rf "$work/*"; rm -rf "$work1/*"; }
+
+# this one's static
+makeuni () { echo "Making universal..."; cd "$work"; tar xf $(ls "$in/jre8-arm64-*release.tar.xz") > /dev/null 2>&1; rm -rf bin; rm -rf lib/aarch64; rm lib/jexec; tar cJf universal.tar.xz * > /dev/null 2>&1; mv universal.tar.xz "$out/"; rm -rf "$work/*"; }
+
+# now time to use them!
+makeuni
+makearch aarch32 arm
+makearch aarch64 arm64
+makearch i386 x86
+makearch amd64 x86_64
+
+# if running under GitHub Actions, write commit sha, else formatted system date
+if [ -n "$GITHUB_SHA" ]
+$GITHUB_SHA>$out/version
+else
+date +%Y%m%d>"$out/version"