\fBgroups\fR displays the current group names or ID values\&. If the value does not have a corresponding entry in \fI/etc/group\fR, the value will be displayed as the numerical group value\&. The optional \fIuser\fR parameter will display the groups for the named \fIuser\fR\&.
.SH"NOTE"
.PP
Systems which do not support concurrent group sets will have the information from \fI/etc/group\fR reported\&. The user must use \fBnewgrp\fR or \fBsg\fR to change their current real and effective group ID\&.