4.3BSD/usr/contrib/spms/src/lib/libspms/test/mk_dir.a

!<arch>
Omk_dir         418696316   968   27    100644  29        `
mkdir: T_OUTPUT: File exists

Tmk_dir.c       418696319   968   27    100644  134       `
/*
 * mk_dir()
 */
main(argc, argv)
int argc;
char **argv;
{
	int mk_dir();

	if (mk_dir(argv[1]) != 0)
		exit(1);
	else
		exit(0);
}
Tmk_dir.sh      418870306   968   27    100755  113       `
#!/bin/csh -f
#
# Tmk_dir
#
(Tmk_dir T_OUTPUT; Tmk_dir T_OUTPUT; rmdir T_OUTPUT) |& diff - Omk_dir
exit($status)