===== Removing Unused Files =====

When a new DokuWiki version is released, some of the files that were needed previously may become obsolete. Keeping these files is harmless usually but they might pose a security risk or break installations later, so we recommend to delete them.

A list of all files that were removed in recent releases can be found in ''data/deleted.files''. You should check if they still exist in your install. If they do, delete them.

You can also see the current list at [[https://github.com/splitbrain/dokuwiki/raw/stable/data/deleted.files|https://github.com/splitbrain/dokuwiki/raw/stable/data/deleted.files]]

:!: Important the list of files is case-sensitive. On case-insensitive file systems the scripts below may delete too much!

==== Using a Script ====

People with shell access to their server can use a script to automatically delete all old files.

=== Linux Shell ===

This simple line should work on any Linux system

<code>grep -Ev '^($|#)' data/deleted.files | xargs -n 1 rm -vf
</file>
=== *nix Shell ===

Some systems may not support the “rm -d” option for directory removal. In that case, you have to use recursive removal (just be sure to double-check that the file list does not include any paths that will delete too much):

<code>grep -Ev '^($|#)' data/deleted.files | xargs -n 1 rm -fr
</file>
=== Python Script ===

Here's a Python script that will also print the files deleted

<code>import os
for line in open("./data/deleted.files"):
    if line.isspace() or line[0] == '#':
   continue
    line = line.rstrip(os.linesep)
    try:
        if os.path.exists(line):
            print('File removed =>  ' + line)
            os.remove(line)
    except OSError:
        pass
</file>

Here's an alternative Python script that is case sensitive and will also delete directories included in the list

<code>import os
import shutil

def exists_casesensitive(path):
    if not os.path.exists(path):
   return False
    directory, filename = os.path.split(path)
    return filename in os.listdir(directory)

with open("./data/deleted.files") as file:
    for line in file:
        line = line.strip()
        if line and not line.startswith('#'):
            path = line.rstrip(os.linesep)
            if exists_casesensitive(path):
                if os.path.isdir(path):
                    shutil.rmtree(path)
                    print('Directory removed =>  ' + path)
                else:
                    os.remove(path)
                    print('File removed =>  ' + path)
            else:
                #print('File not found => ' + path)
                pass
</file>
=== Ruby Script ===

Here's a Ruby script doing the same

<code>files = File.read("./data/deleted.files").split("\n").grep(/^[^$#]/)

files.each do |file|
  puts "Deleting #{file}."
  File.delete(file) rescue puts $!
end
</file>
=== PHP Script ===

The same for PHP:

<code><?php
/* Security function, comment this out to "activate" the script. */
[[http://www.php.net/exit|exit]]('Check source');

$path = [[http://www.php.net/getcwd|getcwd]]();

if([[http://www.php.net/file_exists|file_exists]]($path . '/data/deleted.files')) {
  $file = [[http://www.php.net/fopen|fopen]]($path . '/data/deleted.files', 'r');
  while(false !== ($line = [[http://www.php.net/fgets|fgets]]($file))) {
    $line = [[http://www.php.net/trim|trim]]($line);
    if(![[http://www.php.net/empty|empty]]($line) && ![[http://www.php.net/preg_match|preg_match]]('/^\#/', $line) && [[http://www.php.net/file_exists|file_exists]]($path . '/' . $line)) {
   [[http://www.php.net/unlink|unlink]]($path . '/' . $line);
   echo '/' . $line . ' - deleted<br/>';
    }
  }
  echo 'Done!';
}
</file>
=== Powershell Script ===

Here's a one-line powershell script doing the same

<code>Get-Content .\data\deleted.files | Where-Object {[[$_|]] -notmatch '^($|#)' -and (Test-Path [[$_|]] )} | Foreach-Object {Remove-Item -path [[$_|]] -Force -Recurse}
</file>
=== CMD Script ===

Here's a one-line Windows's CMD script doing the same, although you may need to first reverse all the slashes in 'deleted.files' for the filenames to be accepted.

<code>for /F %i in ('findstr /R /V /C:"^#" /C:"^$" data\deleted.files') do del "%i"
</file>