LDP/LDP/guide/docbook/abs-guide/broken-link.sh

58 lines
1.7 KiB
Bash

#!/bin/bash
# broken-link.sh
# Written by Lee bigelow <ligelowbee@yahoo.com>
# Used in ABS Guide with permission.
# A pure shell script to find dead symlinks and output them quoted
#+ so they can be fed to xargs and dealt with :)
#+ eg. sh broken-link.sh /somedir /someotherdir|xargs rm
#
# This, however, is a better method:
#
# find "somedir" -type l -print0|\
# xargs -r0 file|\
# grep "broken symbolic"|
# sed -e 's/^\|: *broken symbolic.*$/"/g'
#
#+ but that wouldn't be pure Bash, now would it.
# Caution: beware the /proc file system and any circular links!
################################################################
# If no args are passed to the script set directories-to-search
#+ to current directory. Otherwise set the directories-to-search
#+ to the args passed.
######################
[ $# -eq 0 ] && directorys=`pwd` || directorys=$@
# Setup the function linkchk to check the directory it is passed
#+ for files that are links and don't exist, then print them quoted.
# If one of the elements in the directory is a subdirectory then
#+ send that subdirectory to the linkcheck function.
##########
linkchk () {
for element in $1/*; do
[ -h "$element" -a ! -e "$element" ] && echo \"$element\"
[ -d "$element" ] && linkchk $element
# Of course, '-h' tests for symbolic link, '-d' for directory.
done
}
# Send each arg that was passed to the script to the linkchk() function
#+ if it is a valid directoy. If not, then print the error message
#+ and usage info.
##################
for directory in $directorys; do
if [ -d $directory ]
then linkchk $directory
else
echo "$directory is not a directory"
echo "Usage: $0 dir1 dir2 ..."
fi
done
exit $?