Can a User Be in Multiple Groups Linux?

While a user account can be part of multiple groups, one of the groups is always the “primary group” and the others are “secondary groups”. The user’s login process and files and folders the user creates will be assigned to the primary group.

How do I add users to multiple groups?

To add an existing user to multiple secondary groups, use the usermod command with -G option and the name of the groups with comma. In this example, we are going to add the user2 into mygroup and mygroup1 .

How add multiple groups in Linux?

To create a new group type groupadd followed by the new group name. The command adds an entry for the new group to the /etc/group and /etc/gshadow files. Once the group is created, you can start adding users to the group .