Linux Show All Members of a Group

Display members of a group using /etc/group file

Use the grep command as follows (we are looking group named "ftponly"):

grep ftponly /etc/group

To get just a list of all members of a group called "ftponly", type the following awk command:

awk -F':' '/ftponly/{print $4}' /etc/group

Display group memberships for each Linux user

Want to see group memberships for each given USERNAME under Linux? The syntax is as follows for the groups command:

groups your-user-name-here