what is the difference between chmod and setfacl

prakashkumar84 · 11-03-2009, 06:26 PM

Hi All,

could any one tell me the exact difference between chmod and setfacl commands?.

Thanks,
Prakashkumar.M

knudfl · 11-03-2009, 08:23 PM

Welcome to LQ.

Homework ? ?

man chmod

man setfacl

prakashkumar84 · 11-04-2009, 02:49 AM

Hi,

Thanks for your quick reply.

I know the 'man' command very well, but i need to know the exact difference, something with explanation.

Thanks.

Disillusionist · 11-04-2009, 02:57 AM

Read the man page for setfacl

Pay attention to the Examples

It should become apparent what the difference is.

prakashkumar84 · 11-04-2009, 12:00 PM

Thanks.

prakashkumar84 · 11-09-2009, 02:06 AM

sorry, I couldn't find the exact diff thr man pages. Can somebody give me an exact diff?.

Disillusionist · 11-09-2009, 04:12 AM

chmod only caters for permissions based on owner group all:

-rwx------ = read,write, and execute for owner only:

Code:

chmod 700 file

-rwxrwx--- = read,write, and execute for owner and 1 specific group:

Code:

chmod 770 file

setfacl allows for much greater control over who has access to a specific file or folder.

You can grant an additional user read access to a file:

Code:

setfacl -m u:lisa:r file

prakashkumar84 · 11-10-2009, 05:41 PM

Great.

Thanks.

MauMau · 12-10-2009, 07:55 PM

I think a complete explanation of this can be found at http://www.suse.de/~agruen/acl/linux-acls/online/ where the author Andreas Grünbacher explain in details the differences of the two. The author was involved in the design and implementation of extended attributes and ACLs on Linux and he goes in details that makes this issue clear for the reader. Hope this can helps.

Enjoy,

MauMau

prakashkumar84 · 12-11-2009, 01:15 AM

Thanks