usr/src/bin/hostname/hostname.c

/*
 * Copyright (c) 1983 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 */

#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1983 Regents of the University of California.\n\
 All rights reserved.\n";
#endif not lint

#ifndef lint
static char sccsid[] = "@(#)hostname.c  5.1 (Berkeley) %G%";
#endif not lint

/*
 * hostname -- get (or set hostname)
 */
#include <stdio.h>

char hostname[32];
extern int errno;

main(argc,argv)
        char *argv[];
{
        int     myerrno;

        argc--;
        argv++;
        if (argc) {
                if (sethostname(*argv,strlen(*argv)))
                        perror("sethostname");
                myerrno = errno;
        } else {
                gethostname(hostname,sizeof(hostname));
                myerrno = errno;
                printf("%s\n",hostname);
        }
        exit(myerrno);
}