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 }