groupmod - modify a group
| groupmod [-g gid [-o ]] [-n new_group_name] group | |
The groupmod command modifies the system account files to reflect the changes that are specified on the command line.
The options which apply to the groupmod command are:
| -g gid | |
| The numerical value of the group’s ID. This value must be unique, unless the -o option is used. The value must be non-negative. Values between 0 and 999 are typically reserved for system groups. Any files which the old group ID is the file group ID must have the file group ID changed manually. | |
| -n new_group_name | |
| The name of the group will be changed from group to new_group_name. | |
| /etc/group | |
| Group account information. | |
| /etc/gshadow | |
| Secure group account information. | |
The groupmod command exits with the following values:
| 0 | success |
| 2 | invalid command syntax |
| 3 | invalid argument to option |
| 4 | specified group doesn’t exist |
| 6 | specified group doesn’t exist |
| 9 | group name already in use |
| 10 | can’t update group file |