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Old 12-21-2010, 03:33 AM   #1
elainelaw
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Group Control


I have a file the owner is root:root ( mode is 644 ) , I want to release read & write permission to a non root user ( eg. admin_usr ) , I tried to create a specific group ( eg. ADM ) and release it to root user and admin_usr ( by adding this users to ADM in /etc/group ) , but it is not work , can advise if preserve the file mode to 644 , is it ok ? how to do it if I want to have read & write permission in my case ?
 
Old 12-21-2010, 03:49 AM   #2
EricTRA
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Hello,

Have a look at the following articles about ACL, I'm sure you'll be able to configure just what you need/want with them. The packages/commands discussed offer you possibilities beyond the standard ones on file permissions.

Linux File Security
Know your rights

Kind regards,

Eric
 
Old 12-21-2010, 07:00 AM   #3
JoshyJ
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So are you wanting only root to have access to the file? If you just want the owner root to have access, you could make the permissions 600.

Maybe I am misunderstanding what you want to do.
 
Old 12-21-2010, 08:46 PM   #4
chrism01
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To enable the orig soln, you'd have to change the group owner of the file to the new grp ADM:

Code:
chown root:ADM filename
 
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Old 12-23-2010, 01:22 PM   #5
raviteja_s
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change the group ownership

chgrp ADM file1name


gpasswd -M admin_usr ADM
 
Old 12-23-2010, 03:42 PM   #6
devnull10
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Quote:
I want to release read & write permission to a non root user
What I think this means is that currently only root can read/write but you want another user (who is a member of admin_usr) to be able to?

In which case the above (chgrp) will still retain the existing permissions on the file (ie, 644). You will need to:
Code:
chmod 664 FILENAME
or
chmod g+rw FILENAME
so that the group has rw.
 
  


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