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bonnyjoy
n00b
Joined: 12 Dec 2002
Posts: 19
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 Posted: Fri Nov 07, 2003 5:38 pm Post subject: Ooops!!! Chmod / |
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I've just been following the guide to set up an e-mail system for the home network and everything was going fine until I accidentally typed
as root and changed all the permissions of / 
Now I can't log in as a normal user or perform any actions on the consoles that I am already logged in as.
Can someone guide me in the right direction as to getting my box back to useable. |
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Ari Rahikkala
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Joined: 02 Oct 2002
Posts: 370
Location: Finland
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| Posted: Fri Nov 07, 2003 5:49 pm Post subject: |
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If you didn't use -R, it should be enough to just as root
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bonnyjoy
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Joined: 12 Dec 2002
Posts: 19
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| Posted: Fri Nov 07, 2003 5:52 pm Post subject: |
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| Thanks very much for the quick reply. |
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db_404
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Joined: 05 Dec 2002
Posts: 336
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| Posted: Fri Nov 07, 2003 5:58 pm Post subject: |
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Could have been worse, rm -rf for example.
If you still have a root shell open 'chmod 755 /' should fix it.
If not (I'm assuming you are in X) so hit Crtl-Alt-F2 to get to a login prompt, try logging in as root and 'chmod 755 /'
If that doesn't work then a reboot should fix it.. |
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bonnyjoy
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Joined: 12 Dec 2002
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| Posted: Fri Nov 07, 2003 7:56 pm Post subject: |
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| Why would a reboot fix it? |
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Roguelazer
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Joined: 10 Feb 2003
Posts: 1233
Location: San Francisco, CA
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| Posted: Fri Nov 07, 2003 8:09 pm Post subject: |
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Well, one would think that any system with any intellect behind it would see that the entire filesystem had been made unbootable and would repair it...
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db_404
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Joined: 05 Dec 2002
Posts: 336
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| Posted: Mon Nov 10, 2003 2:33 pm Post subject: |
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I suspect it's because '/' isn't really a real directory, I would imagine it's just a created by the OS as the 'root of all mountpoints'.
How did I find out that a reboot works? Well, I tried chmodding / on a scrap box here - realized I had no keyboard or monitor to connect to it, and ssh wasn't proving all that usefull anymore, and reached for the power button.... |
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zhenlin
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Joined: 09 Nov 2002
Posts: 1361
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| Posted: Mon Nov 10, 2003 4:11 pm Post subject: |
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/ is a real directory. It belongs to the partition that is mounted as /
And no, Linux will not automatically fix anything for you. How does it know you actually did or didn't intend to do that?
The superuser bypasses all permissions (except execute, suid and sgid) - there shouldn't be a problem reverting it. |
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