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command to add users to group

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Top Forums Shell Programming and Scripting command to add users to group
# 1  
Old 12-18-2006
command to add users to group
does a command exist to add users to more than one group?

i think the usermod command can do this but i'm not really sure. past ways of me doing this has always been to just hack the /etc/group file and put the user in whatever group i need him to be in. however, vi..ing files like /etc/groups or /etc/passwd is something i really dont like doing nor do i like anyone else doing. so, any ideas?

also, his there a command to list the users in a group?
Terrible
# 2  
Old 12-18-2006
https://www.unix.com/unix-for-dummies-questions-and-answers/6194-assigning-existing-users-secondary-group.html
# 3  
Old 12-19-2006
to list the groups of the users the command is:

groups

and to add a user to a group the things to do are:

->get the current groups of the user by groups command
-> usermod -G grp1,grp2,newgrp username
-> logout and login again.

Note: if existing groups are not included in the usermod then those groups will be replace ny newgrp

cheers,

Guru
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