[SOLVED] useradd -u can assign userid and gid at the same time?

JockVSJock · 02-11-2016, 08:43 PM

Found this example stating you can add a user with a uid and gid at the same time. Both uid and gid are different. I then tried it with the same number for user and group.

Example:

Code:

useradd -u 1001 jsmith -g 2001 jsmith 
useradd: group '2001' does not exit 

useradd -u 9999 mberenyi -g 9999 mberenyi 
useradd:  group '9999' does not exit

I can't get either to work. Even though the example I found is saying it will work.

Is there a way to add a user by uid and gid with useradd? Or is this incorrect?

JJJCR · 02-11-2016, 10:12 PM

id -g jsmith what is the output?

JockVSJock · 02-11-2016, 10:26 PM

Code:

id jsmith 
id:  jsmith:  No such user

JJJCR · 02-12-2016, 01:36 AM

try:

groupadd -g 2001 jsmith

then the command you posted above:

useradd -u 1001 jsmith -g 2001 jsmith

JockVSJock · 02-12-2016, 07:26 AM

That worked.

The example that I'm working from can be found here, which I don't think is correct is here:

http://www.tecmint.com/add-users-in-linux/

Seems like you have to create the group first and then modify the gid with what you posted.

Here is the example:

Code:

groupadd -g 2112 glee 

useradd -u 2112 -g 2112 glee

grep -i glee --color /etc/passwd 
glee:x:2112:2112::/home/glee:/bin/bash 

grep -i glee --color /etc/group
glee:x:2112:

suicidaleggroll · 02-12-2016, 11:19 AM

See the man page for useradd:

Code:

       -g, --gid GROUP
           The group name or number of the user's initial login group. The
           group name must exist. A group number must refer to an already
           existing group.

If the tutorial says otherwise, it's wrong. Always consult the man page when a flag isn't working as you expect.