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08-05-2003, 01:47 PM
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#1
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Member
Registered: Jul 2003
Posts: 39
Rep:
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How do you chmod a file that is -r--------?
If I login as root, how do I edit this file?
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08-05-2003, 01:50 PM
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#2
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Senior Member
Registered: Apr 2002
Location: Arbovale, WV
Distribution: Slackware
Posts: 1,761
Rep:
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chmod 700
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08-05-2003, 02:23 PM
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#3
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Member
Registered: Jul 2003
Posts: 39
Original Poster
Rep:
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So even though the file permissions specifically state that root can only read the file, its still possible to edit the file so that root can do the other stuff too?
that seems contradictory to me. I guess the file permissions dont apply if you are logged in as root
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08-05-2003, 04:41 PM
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#4
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Member
Registered: Jan 2002
Distribution: Debian
Posts: 43
Rep:
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If the permissions are -r-------- then root can only read the file, not write to it. If you do a chmod 700 as tangle said the permissions will now be -rwx------ so the owner of the file and root can read, write to, or, if it is a script, execute it.
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08-05-2003, 05:32 PM
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#5
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Member
Registered: Jul 2003
Distribution: slackware
Posts: 56
Rep:
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> If the permissions are -r-------- then root can only read the file, not write to it
root can do whatever he wants 
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08-05-2003, 05:45 PM
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#6
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Senior Member
Registered: Jun 2003
Distribution: Debian/other
Posts: 2,104
Rep:
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Quote:
If the permissions are -r-------- then root can only read the file, not write to it. If you do a chmod 700 as tangle said the permissions will now be -rwx------ so the owner of the file and root can read, write to, or, if it is a script, execute it.
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Root user can write to anything - have a look at this.
Use a
chmod 400 filename
to create this permission pattern on an ordinary users file.
-r--------
(check it with ls -l filename)
Then - log in as Root user and you'll find you can write to the file as Root user , even considering the permission pattern and the owner.
Last edited by Skyline; 08-05-2003 at 05:48 PM.
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08-05-2003, 05:48 PM
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#7
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Senior Member
Registered: Dec 2002
Location: England
Distribution: Used to use Mandrake/Mandriva
Posts: 2,794
Rep: 
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Root can at least always change the permissions so he can do anything.
But I've noticed things like apache files only being accessable by the user apache until I'd alter permissions or change user.
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