Can Linux user belongs to multiple groups?

Can Linux user belongs to multiple groups?

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.

Can we add user 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 do you get all groups that a user is a member of 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 .

How many groups can a Linux user be in?

Linux system users can have a maximum of 15 secondary groups. A Linux system’s groups are stored in the /etc/group file. To add a user to a secondary group use the example command.

Can a user be a member of multiple groups in Linux?

3 Answers 3. 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.

What is a user’s primary group ID in Linux?

A user’s primary group is usually the group that is recorded in your Linux system’s /etc/passwd file. When a Linux user logs into their system, the primary group is usually the default group associated with the logged in account. You can find a user’s primary group ID by viewing the contents of the your system’s /etc/passwd file.

How do I see a list of groups in Linux?

Here are some commands to display group information: cat /etc/group: Show a list of existing groups, with membership displayed in the last field One resource for these commands is their related man pages. The process for adding users to a group requires the -a and/or -G options.

Is there a way to create multiple groups for a user?

However, there’s only one group of which is the user’s primary group. When adding a user, for example using adduser, one can specify the primary group using the –ingroup option, and add multiple secondary groups like this in Debian/Ubuntu and alike: