#include "busybox.h"
#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
#include <sys/types.h>
extern int tty_main(int argc, char **argv)
if (argc > 1) {
if (argv[1][0] != '-' || argv[1][1] != 's')
- usage(tty_usage);
+ show_usage();
} else {
tty = ttyname(0);
if (tty)