permissions for directory

just going through chapter 7 of Mc Graw Hill study guide,

it says all about the ownership of a directory and file and there permissons for owner, gorup and other

How do you add a group and allow it a set of permissions?

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Mishra

http://www.linuxhomenetworking.com/wiki/index.php/Quick_HOWTO_:_Ch09_:_Linux_Users_and_Sudo

aueddonline

Mishra wrote:

http://www.linuxhomenetworking.com/wiki/index.php/Quick_HOWTO_:_Ch09_:_Linux_Users_and_Sudo

couldn't see my answer on there, can it be done or do you just need to add the user to the owning group?

sprkymrk

You use the chgrp command to set or change the group on a file.

Then use the chmod -g to set whatever permissions that group has to the file (chmod -g+r+w for read and write for example).

http://www.techexams.net/technotes/linuxplus/users_permissions.shtml#cpo

Mishra

You asked how to add a group and allow it a set of permissions.

The articles states

groupadd GROUP

to add a group, and to add permissions it also states

"You can also use the chown command with the -r switch for it to doe recursive searches down into directories to change permissions. "

aueddonline

yeah sorry my question was badly worded, i'll have another go

You can edit permissions for owner, owner group and other. so lets say that I have a file that belongs to a group called 'mobile' and the permissions on the file are u=rw,g=rw,o=r, how can I have it so that another group called 'roomA' can have rw permissions without giving rw permissions to other?

Mishra

Take a look at

setfacl

That should do it for you.

I don't want to give you the exact answer so you learn how it works on your own.

aueddonline

Mishra wrote:

Take a look at

setfacl

That should do it for you. I don't want to give you the exact answer so you learn how it works on your own.

thanks man, that's the ticket, I got

setfacl -m group:roomA:rw- /directory/file.txt

and the to see the magic working

getfacl /directory/file