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If one is on as root, and runs this:
chmod -R g-w,o-w /
What are the implications? And what would one have to do to undo the effects?
Yes, the dumb user was me. So we fixed it as follows:
- Add back g+w and o+w to all the "c" file types in /dev and its subdirectories.
- Add back g+w and o+w to /tmp so processes can write temp files.
- We're not worried about /home. That was what we were attempting to modify.
And things like /usr/lib and such are already g-w and o-w.
But what other system areas my be detrimentally impacted by removing group and others write as root from the / level?
The system seems fine now, but just want to know if there is anything I'm missing that has yet to turn up.
All assistance appreciated!
James Madison
Posted 2016-06-17T20:45:51.610
Reputation: 155
Note that for the "c" files in /dev, we modeled it after another machine and only did g+w, or o+w or both based on the other machine; not always just both. – James Madison – 2016-06-17T20:47:39.860
All I can think of would be to check the log files in /var/log for any errors related to issues reading/writing files. – Curtis – 2016-06-17T23:06:26.080