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Remove write permission for others recursively

cautionPermissions and ownershipalle

Caution: This command changes the system. Understand what it does before you run it.

Adjust the values, the command updates live
user@server
chmod -R o-w /var/www/vhosts/example.com/httpdocs

Uses o-w to remove only the write permission for others, while owner and group permissions stay as they are. Gentler than a blanket reset to 755 and 644, because intentional deviations are preserved. Test the site and uploads afterwards.

Note: If an application relied on write permission for others because PHP runs as a different user, uploads will fail afterwards. The real fix is then the correct owner, not 777.

Also searched as

  • fix 777 permissions
  • remove world writable permission
  • chmod o-w recursive
  • fix insecure permissions in webspace

Related one-liners

All in Permissions and ownership

Find world-writable files and directories

$find /var/www/vhosts -xdev -perm -0002 ! -type l -ls 2>/dev/null
harmlessPermissions and ownership

Secure the permissions of wp-config.php

$chmod 600 /var/www/vhosts/example.com/httpdocs/wp-config.php
cautionPermissions and ownership

Copy permissions and owner from a reference file

#chmod --reference=/var/www/vhosts/example.com/httpdocs/index.php /var/www/vhosts/example.com/httpdocs/wp-config.php && chown --reference=/var/www/vhosts/example.com/httpdocs/index.php /var/www/vhosts/example.com/httpdocs/wp-config.php
cautionPermissions and ownership

Find files with the SUID or SGID bit

#find / -xdev \( -perm -4000 -o -perm -2000 \) -type f -exec ls -l {} + 2>/dev/null
harmlessPermissions and ownership

Set all directories to 755 recursively

$find /var/www/vhosts/example.com/httpdocs -type d -exec chmod 755 {} +
cautionPermissions and ownership

Set all files to 644 recursively

$find /var/www/vhosts/example.com/httpdocs -type f -exec chmod 644 {} +
cautionPermissions and ownership

Read first, then run.

The commands on myline.de act directly on servers, files and databases. A wrong path or placeholder can delete data irreversibly or make a server unreachable.

  • All commands are provided without warranty and are not tested on every system.
  • Understand what a command does before running it, and check every placeholder.
  • Make a backup first and, if possible, try it on a test system.
  • You run commands at your own risk. Liability for damages is excluded to the extent permitted by law.