linux users in group code example
Example 1: linux add user to group
# Change the primary group a user is assigned to, note the -g here.
# When you use a lowercase g, you assign a primary group. When you
# use an uppercase -G you assign a new secondary group.
usermod -g groupname username
Example 2: check which users are part of a group linux
grep 'group-name-here' /etc/group
Example 3: how to check user in group linux
# to see the group joined by current user
$ id
groups
groups {USERNAME}
groups vivek
Example 4: linux add user to group
# add user to additional group
usermod -G groupname username
Example 5: linux list user group
groups [user name]
# [user name] : (optionnal) the user to list the group of
# default is the one executing the command.