112 lines
2.2 KiB
Groff
112 lines
2.2 KiB
Groff
.TH STAT 1
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.SH NAME
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stat, lstat, readlink \- provide a shell interface to the stat(2) system call
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.SH SYNOPSIS
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.B stat
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.RB [ - ]
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.RB [ -\fIfd ]
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.RB [ -all ]
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.RB [ -s ]
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.RB [ -\fIfield " ...]"
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.RI [ file1 " ...]"
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.SH DESCRIPTION
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.B Stat
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does little more than provide access to the fields in the
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.B struct stat
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as defined in the
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.BR stat (2)
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manual page. Each field that is to be listed
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is specified as the field name without the leading
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.BR st_ .
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This and the other two options are described below. All options are then
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applied to the files listed. If
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.B stat
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is called as
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.B lstat
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then the
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.BR lstat (2)
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system call is used, if called as
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.B stat
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symbolic links are expanded with
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.BR stat (2).
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If called as
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.B readlink
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then the output is only the contents of the symbolic link.
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.PP
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If no fields are named then all fields are printed. If no files are listed
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then all open filedescriptors are printed.
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.SH OPTIONS
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.TP
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.B \-
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If the first argument is ``\-'', the list of files is assumed to come from stdin.
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This is useful for things like ``ls | stat \-uid \-mtime.''
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.B \-\fIfd
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If an argument is a ``\-'' followed by a number then that number is used as
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a file descriptor whose information is to be printed.
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.TP
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.B \-all
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List all fields for each file.
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.TP
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.B \-s
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Use
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.BR lstat (2).
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.TP
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.B \-mode
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List the
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.B mode
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field. Similarly for
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.BR ino ,
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.BR dev ,
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.BR rdev ,
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.BR nlink ,
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.BR uid ,
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.BR gid ,
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.BR size ,
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.BR atime ,
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.BR mtime ,
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and
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.BR ctime .
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Under BSD derived systems you also have
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.B blksize
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and
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.BR blocks .
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.PP
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.B \-Atime
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.br
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.B \-Mtime
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.br
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.B \-Ctime
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.RS
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The lower case versions of these three options display the time as an integer
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that is the ``seconds since 00:00 Jan 1. 1970.''
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Listing the fields with the first letter
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in caps causes the times to be printed in
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.BR ctime (3)
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format (i.e., human readable).
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.RE
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.SH EXAMPLES
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.LP
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# Find out the number of links to each file
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.br
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$ stat \-nlink *.c
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.LP
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# sort files by age (much like ls \-t)
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.br
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$ stat \-atime * | sort +1
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.LP
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# Find out which file is older in sh(1)
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.br
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if test `stat -mtime $1` -lt `stat -mtime $2`; then
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.br
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echo $1 is older than $2
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.br
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else
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.br
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echo $2 is older than $1
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.br
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fi
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.SH "SEE ALSO"
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.BR stat (2).
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.SH AUTHOR
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Larry McVoy (mcvoy@rsch.wisc.edu)
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