What Groups Does a User Belong to Linux?

What groups is my user in Linux?

There are multiple ways to find out the groups a user belongs to. The primary user’s group is stored in the /etc/passwd file and the supplementary groups, if any, are listed in the /etc/group file. One way to find the user’s groups is to list the contents of those files using cat , less or grep .

Can Linux user belong to multiple groups?

3 Answers. Yes, a user can be member of multiple groups: Users are organized into groups, every users is in at least one group, and may be in other groups. Group membership gives you special access to files and directories which are permitted to that group.