1/* See LICENSE file for copyright and license details. */
 2
 3
 4#include <stdio.h>
 5#include <unistd.h>
 6
 7#include "util.h"
 8
 9static void
10usage(void)
11{
12	eprintf("usage: %s\n", argv0);
13}
14
15// ?man logname: print login name
16// ?man display the user login name
17int
18main(int argc, char *argv[])
19{
20	char *login;
21
22	argv0 = *argv, argv0 ? (argc--, argv++) : (void *)0;
23
24	if (argc)
25		usage();
26
27	if ((login = getlogin()))
28		puts(login);
29	else
30		eprintf("no login name\n");
31
32	return fshut(stdout, "<stdout>");
33}