[OT] How to fix a stupid chmod mistake without rebooting

[PleegWat]

Matthew Flaschen wrote:
> Lessons (pick any two)
> 
> 1. Keep root enabled
> 2. sudo will not stop you from making stupid decisions.
> 3. Don't run sudo chmod a-rwx /

I'll pick lesson 4: Think before you type.

PleegWat