usr.bin/find/function.c

975  * -group gname functions --
977  *	True if the file belongs to the group gname.  If gname is numeric and
979  *	name, gname is taken as a group ID.
990 	char *gname;
995 	gname = nextarg(option, argvp);
999 	g = getgrnam(gname);
1001 		char* cp = gname;
1002 		if (gname[0] == '-' || gname[0] == '+')
1003 			gname++;
1004 		gid = atoi(gname);
1005 		if (gid == 0 && gname[0] != '0')
1006 			errx(1, "%s: %s: no such group", option->name, gname);