1/* See LICENSE file for copyright and license details. */
 2
 3#include <stdio.h>
 4#include <string.h>
 5#include <unistd.h>
 6
 7#include "util.h"
 8
 9static void
10usage(void)
11{
12  eprintf("usage: %s [name]\n", argv0);
13}
14
15// ?man hostname: show or set hostname
16// ?man arguments: name
17// ?man display or configure the system hostname
18int
19main(int argc, char *argv[])
20{
21  char host[HOST_NAME_MAX + 1];
22
23  ARGBEGIN
24  {
25    default:
26      usage();
27  }
28  ARGEND
29
30  if (!argc) {
31    if (gethostname(host, sizeof(host)) < 0)
32      eprintf("gethostname:");
33    puts(host);
34  } else if (argc == 1) {
35    if (sethostname(argv[0], strlen(argv[0])) < 0)
36      eprintf("sethostname:");
37  } else {
38    usage();
39  }
40
41  return fshut(stdout, "<stdout>");
42}