this post was submitted on 30 Dec 2023
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Asklemmy
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sudo chmod 000 -R /is very fun way of braking your system and is not widely known ๐What does this do? nobody can read any file? would sudo chmod 777 fix it at least to a usable system?
The trick is that you loose access to every file on the system.
chmodis also a file. Andls. Andsudo. You see where it's going. System will kinda work after this command, but rebooting (which by a coincidence is a common action for "fixing" things) will reveal that system is dead.Yep. You could run chmod again to fix it (from a different OS / rescue USB), but that would leave all the permissions in a messy state - having everything set to 777 is incredibly insecure, and will also likely break many apps/scripts that expect more restrictive permissions. So the only way to fix this properly would be to reinstall your OS/restore from backups.
How are you gonna run chmod when you don't have permissions to use it anymore?