vigr:tldr:cd574

The "vigr" command is used to edit the system's password and group files in Linux-based operating systems.

When you run the "vigr" command, it opens the system's group file in an editor. The group file, typically located at "/etc/group", contains information about all the groups on the system. These groups are used to manage user permissions and access control.

By editing this file, you can add or remove groups, modify group information, or assign users to specific groups. The "vigr" command ensures that only one user can modify the group file at a time, preventing conflicts or errors when multiple users try to make changes simultaneously.

Once you make the necessary modifications and save the changes to the group file, the changes take effect immediately, affecting the group permissions and access on the system.