how to list groups along with its users using terminal in ubuntu 14.04.5?

Question

For example: Group workers have 2 users: john and jony . What command do I have to use to list the members of group workers ?

These commands don't serve my purpose: compgen -u , compgen -g, cut -d ":" -f 1 /etc/passwd

Answer 1

Several options are available:

getent group <group_name> | cut -d":" -f4-

or

grep -iE "^adm" /etc/group | cut -d":" -f4-

Note you have to add the group name where I have "^adm, this will present members of that group.

See: man getent