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Top Forums UNIX for Dummies Questions & Answers Shell Command for Symbolic Link Targets Post 302169501 by bdizenhouse on Thursday 21st of February 2008 12:57:09 PM
Old 02-21-2008
Shell Commands for Symbolic Links

Thank you very much for the indepth solution.

I'm still very new to the Unix world, and where I am, we mainly deal with AIX, so I will definately check out the forums here.

So I've come to the conclusion to use the following 2 commands:

(find all non-absolute symbolic links)
find / -type l ! -fstype nfs 2> /dev/null | (while read FN ; do test -e "$FN" | file -h "$FN" | grep 'symbolic link to [^/]' ; done) | wc -l

(final all broken symbolic links)
find / -type l ! -fstype nfs 2> /dev/null | (while read FN ; do test -e "$FN" || ls -l "$FN" 2> /dev/null; done) | wc -l

Thanks very much for the help!
ben
 

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SYMLINKS(8)						      System Manager's Manual						       SYMLINKS(8)

NAME
symlinks - symbolic link maintenance utility SYNOPSIS
symlinks [ -cdrstv ] dirlist DESCRIPTION
symlinks is a useful utility for maintainers of FTP sites, CDROMs, and Linux software distributions. It scans directories for symbolic links and lists them on stdout, often revealing flaws in the filesystem tree. Each link is output with a classification of relative, absolute, dangling, messy, lengthy, or other_fs. relative links are those expressed as paths relative to the directory in which the links reside, usually independent of the mount point of the filesystem. absolute links are those given as an absolute path from the root directory as indicated by a leading slash (/). dangling links are those for which the target of the link does not currently exist. This commonly occurs for absolute links when a filesystem is mounted at other than its customary mount point (such as when the normal root filesystem is mounted at /mnt after booting from alternative media). messy links are links which contain unnecessary slashes or dots in the path. These are cleaned up as well when -c is specified. lengthy links are links which use "../" more than necessary in the path (eg. /bin/vi -> ../bin/vim) These are only detected when -s is specified, and are only cleaned up when -c is also specified. other_fs are those links whose target currently resides on a different filesystem from where symlinks was run (most useful with -r ). OPTIONS
-c convert absolute links (within the same filesystem) to relative links. This permits links to maintain their validity regardless of the mount point used for the filesystem -- a desirable setup in most cases. This option also causes any messy links to be cleaned up, and, if -s was also specified, then lengthy links are also shortened. Links affected by -c are prefixed with changed in the output. -d causes dangling links to be removed. -r recursively operate on subdirectories within the same filesystem. -s causes lengthy links to be detected. -t is used to test for what symlinks would do if -c were specified, but without really changing anything. -v show all symbolic links. By default, relative links are not shown unless -v is specified. BUGS
symlinks does not recurse or change links across filesystems. AUTHOR
symlinks has been written by Mark Lord <mlord@bnr.ca>, the developer and maintainer of the IDE Performance Package for linux. SEE ALSO
symlink(2) Version 1.2 November 1994 SYMLINKS(8)
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