The numerical value of the group's ID\&. This value must be unique, unless the \fB\-o\fR 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\&.
.TP
\fB\-n\fR\fInew_group_name\fR
The name of the group will be changed from \fIgroup\fR to \fInew_group_name\fR\&.
.SH"FILES"
.TP
\fI/etc/group\fR
group account information
.TP
\fI/etc/gshadow\fR
secure group account information
.SH"EXIT VALUES"
.PP
The \fBgroupmod\fR command exits with the following values: