Use scripts to automatically clear symbolic links of missing link files in specified folders

#!/bin/bash
# A file that can test the symbolic links that have been broken and can output the files they point to# So that they can provide output to xargs for processing :)# For example. /somedir /someotherdir|xargs rm#
#The following method, no matter what, is a better method:#
#find "somedir" -type l -print0|\
#xargs -r0 file|\
#grep "broken symbolic"|
#sed -e 's/^\|: *broken symbolic.*$/"/g'
#
#But this is not a pure bash script, at least not now.#Note: Beware of using it in the /proc file system and any dead loop links!##############################################################
#If no parameters are passed into the script, then use#Current directory. Otherwise, the passed parameters are used as the directory#Come search.####################
[ $# -eq 0 ] && directorys=`pwd` || directorys=$@

# Write the function linkchk to check whether the passed directory or file is a link.# and determine whether these files or directories exist. Then print the file they point to.#If the passed in element contains a subdirectory,#Then put the subdirectories into the linkcheck function to process, which achieves the purpose of recursion.##########
linkchk () {
  for element in $1/*; do
    [ -h "$element" -a ! -e "$element" ] && echo \"$element\"
    [ -d "$element" ] && linkchk $element
    # Of course, '-h' is used to test symbolic links, and '-d' is used to test directories.  done
}
#Send each parameter passed to the script to the linkchk function for processing,# Check if there are any directories available. If not, print the error message and#User information.################
for directory in $directorys; do
  if [ -d $directory ]
    then linkchk $directory
    else
      echo "$directory is not a directory"
      echo "Usage: $0 dir1 dir2 ..."
  fi
  done
exit 0
# Create a new file nameandrew@andrew:/work/bash/src$ touch name
# Create symbolic link for nameandrew@andrew:/work/bash/src$ ln -s name aaa
# Delete the name file, aaa will become a symbolic link to the missing link fileandrew@andrew:/work/bash/src$ rm name
# View the symbolic link file of aaa that executes the name in the current directoryandrew@andrew:/work/bash/src$ ls -l
Total dosage 44
lrwxrwxrwx 1 andrew andrew  4 2moon  1 13:20 aaa -> name
-rwxrwxr-x 1 andrew andrew 8656 1moon 30 14:46 
-rw-rw-r-- 1 andrew andrew 1887 2moon  1 13:08 broken_link.sh
-rw-rw-r-- 1 andrew andrew 322 1moon 29 13:08 echo_unique.sh
-rw-rw-r-- 1 andrew andrew 1513 1moon 29 15:55 escape_charater.sh
-rw-rw-r-- 1 andrew andrew 279 1moon 30 13:48 exit_example.sh
-rw-rw-r-- 1 andrew andrew 199 2moon  1 11:52 if_else_more.sh
-rw-rw-r-- 1 andrew andrew 1946 1moon 30 21:03 if_true.sh
-rw-rw-r-- 1 andrew andrew 337 1moon 29 14:02 single_quotation_mark.sh
-rw-rw-r-- 1 andrew andrew 864 2moon  1 12:00 
# Call the script to clear the symbolic link of the link file in the current folderandrew@andrew:/work/bash/src$ bash broken_link.sh ./ | xargs rm
andrew@andrew:/work/bash/src$ ls -l
Total dosage 44
-rwxrwxr-x 1 andrew andrew 8656 1moon 30 14:46 
-rw-rw-r-- 1 andrew andrew 1887 2moon  1 13:08 broken_link.sh
-rw-rw-r-- 1 andrew andrew 322 1moon 29 13:08 echo_unique.sh
-rw-rw-r-- 1 andrew andrew 1513 1moon 29 15:55 escape_charater.sh
-rw-rw-r-- 1 andrew andrew 279 1moon 30 13:48 exit_example.sh
-rw-rw-r-- 1 andrew andrew 199 2moon  1 11:52 if_else_more.sh
-rw-rw-r-- 1 andrew andrew 1946 1moon 30 21:03 if_true.sh
-rw-rw-r-- 1 andrew andrew 337 1moon 29 14:02 single_quotation_mark.sh
-rw-rw-r-- 1 andrew andrew 864 2moon  1 12:00