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vigr - Edit /etc/group
The vigr command can only be executed by the superuser. It is a command related to user accounts and groups. Its purpose is to use the vi editor to open and modify important configuration files for groups, namely "/etc/group" and "/etc/gshadow", in order to make changes to group settings.
The file "/etc/group" is a configuration file that defines groups on a Unix-like operating system. It specifies group names, group IDs, and the users who are members of each group. The format of the "/etc/group" file is referenced here.
The file "/etc/gshadow" is another configuration file that contains group password information, typically stored as "x." The format of the "/etc/gshadow" file is also referenced here.
For more detailed information about using the vigr command and editing the "/etc/group" file, you can refer to the provided link.