sbase

suckless unix tools
git clone git://git.2f30.org/sbase
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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 }