Home | History | Annotate | Line # | Download | only in sleep
sleep.c revision 1.8 
      1 /*	$NetBSD: sleep.c,v 1.8 1995/03/21 09:11:11 cgd Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1988, 1993, 1994
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #ifndef lint
     37 static char copyright[] =
     38 "@(#) Copyright (c) 1988, 1993, 1994\n\
     39 	The Regents of the University of California.  All rights reserved.\n";
     40 #endif /* not lint */
     41 
     42 #ifndef lint
     43 #if 0
     44 static char sccsid[] = "@(#)sleep.c	8.3 (Berkeley) 4/2/94";
     45 #else
     46 static char rcsid[] = "$NetBSD: sleep.c,v 1.8 1995/03/21 09:11:11 cgd Exp $";
     47 #endif
     48 #endif /* not lint */
     49 
     50 #include <stdio.h>
     51 #include <stdlib.h>
     52 #include <unistd.h>
     53 #include <locale.h>
     54 
     55 void usage __P((void));
     56 
     57 int
     58 main(argc, argv)
     59 	int argc;
     60 	char *argv[];
     61 {
     62 	int ch, secs;
     63 
     64 	setlocale(LC_ALL, "");
     65 
     66 	while ((ch = getopt(argc, argv, "")) != EOF)
     67 		switch(ch) {
     68 		case '?':
     69 		default:
     70 			usage();
     71 		}
     72 	argc -= optind;
     73 	argv += optind;
     74 
     75 	if (argc != 1)
     76 		usage();
     77 
     78 	if ((secs = atoi(*argv)) > 0)
     79 		(void)sleep(secs);
     80 	exit(0);
     81 }
     82 
     83 void
     84 usage()
     85 {
     86 
     87 	(void)fprintf(stderr, "usage: sleep seconds\n");
     88 	exit(1);
     89 }
     90