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hostname.c - sbase - suckless unix tools
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hostname.c (579B)
---
1 /* See LICENSE file for copyright and license details. */
2 #include <stdio.h>
3 #include <string.h>
4 #include <unistd.h>
5
6 #include "util.h"
7
8 static void
9 usage(void)
10 {
11 eprintf("usage: %s [name]\n", argv0);
12 }
13
14 int
15 main(int argc, char *argv[])
16 {
17 char host[HOST_NAME_MAX + 1];
18
19 ARGBEGIN {
20 default:
21 usage();
22 } ARGEND
23
24 if (!argc) {
25 if (gethostname(host, sizeof(host)) < 0)
26 eprintf("gethostname:");
27 puts(host);
28 } else if (argc == 1) {
29 if (sethostname(argv[0], strlen(argv[0])) < 0)
30 eprintf("sethostname:");
31 } else {
32 usage();
33 }
34
35 return fshut(stdout, "<stdout>");
36 }
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