adding second secondray group to a user using command

[Ravi_8]

Hi all

We knew that we can change the second secondary group to user(s) using sam. but how to achieve the same using command line.
groupmod changes the existing secondary group to the specified group.
Guys do u aware of any other alternatives.

thanx in advance

[RAC_1]

usermod -G secondary_groups is the one you are lokking for.

check usermod man page for details.

[Ravi_8]

Hi,

I am sorry, instead of usermod i have mentioned as groupmod in my question

[RAC_1]

modify /etc/group and adding user to groups.

run grpck afterwards.

[Armin Feller]

Hi,

see man groupadd

Regs
Armin

[avsrini]

Hi Ravi,
When using secondary group to a user, it changes the existing secondary group.
But you can use my script to add additional secondary groups

EG=`/usr/bin/groups $1|sed 's/ /.g'`
NG=$EG,$2
/usr/sbin/usermod -G $NG $1


You can pass username and the secondary group name that has to be added.

Hope this helps u.


Srini.

[avsrini · Accepted solution]

Hi Ravi,

Sorry my previous post has a error on the sed. use the following.


When using secondary group to a user, it changes the existing secondary group.
But you can use my script to add additional secondary groups

EG=`/usr/bin/groups $1|sed 's/ /,/g'`
NG=$EG,$2
/usr/sbin/usermod -G $NG $1


You can pass username and the secondary group name that has to be added.

Hope this helps u.

Srini.

[Ravi_8]

Hi, srini

thanx, your script worked