Adding root user to a group


 
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# 1  
Old 10-21-2005
Adding root user to a group

Hey everyone, I need a little help....

I need to add my root user to a new group I have created, I'm just alittle unsure how to do this.

I know I need to use the 'useradd' command, the user 'root' needs to be added to a new group called 'beoper' and retain his membership in the following groups - 'other, root, bin, sys, adm, uucp, mail, tty, lp, nuucp, daemon'

Could someone please show me the correct syntax to perform this function, I really can't afford to screw this one up. Thanks. Smilie
# 2  
Old 10-22-2005
You have things slightly mixed up. useradd is used to add a new user to the system. If you want to edit the attributes of an existing user, you have to use usermod. Run the following command:
Code:
usermod -G beoper root

This will add beoper to the list of groups that root is already a member of. Here is the man page for usermod.
# 3  
Old 10-22-2005
Thanks for that. Smilie

Do I need to list all the other groups that root is a member of ?

The -G syntax states that you need to list all current groups or you will no longer be a members of those groups.

I just need to make sure, I can't have any mistakes.

Last edited by The Specialist; 10-22-2005 at 03:14 AM..
# 4  
Old 10-22-2005
Quote:
Originally Posted by blowtorch
This will add beoper to the list of groups that root is already a member of.
I don't think so... look at the man page....

Quote:
-G group,[...]
A list of supplementary groups which the user is also a member of. Each group is separated from the next by a comma, with no intervening whitespace. The groups are subject to the same restrictions as the group given with the -g option. If the user is currently a member of a group which is not listed, the user will be removed from the group
Hence, the user will be, I assume, removed from all groups except their primary group and the beoper group.

I would just go and hack at the /etc/group file, and tack "root" onto the end of the beoper line (comma seperated with the other users listed).

Cheers
ZB
# 5  
Old 10-22-2005
Quote:
Originally Posted by The Specialist
Do I need to list all the other groups that root is a member of ?
If you use usermod, yes. Comma seperated, no spaces. Do not include primary group membership.

Cheers
ZB
# 6  
Old 10-22-2005
Quote:
Originally Posted by zazzybob
I would just go and hack at the /etc/group file, and tack "root" onto the end of the beoper line (comma seperated with the other users listed).
I'd also do it the way ZB suggests.
# 7  
Old 10-22-2005
Sorry for the wrong info. Actually, I always edit the /etc/group file and it really has been ages since I used the usermod command to add a user to a group.
 
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