sleep.c revision 36152
11556Srgrimes/* 21556Srgrimes * Copyright (c) 1988, 1993, 1994 31556Srgrimes * The Regents of the University of California. All rights reserved. 41556Srgrimes * 51556Srgrimes * Redistribution and use in source and binary forms, with or without 61556Srgrimes * modification, are permitted provided that the following conditions 71556Srgrimes * are met: 81556Srgrimes * 1. Redistributions of source code must retain the above copyright 91556Srgrimes * notice, this list of conditions and the following disclaimer. 101556Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111556Srgrimes * notice, this list of conditions and the following disclaimer in the 121556Srgrimes * documentation and/or other materials provided with the distribution. 131556Srgrimes * 3. All advertising materials mentioning features or use of this software 141556Srgrimes * must display the following acknowledgement: 151556Srgrimes * This product includes software developed by the University of 161556Srgrimes * California, Berkeley and its contributors. 171556Srgrimes * 4. Neither the name of the University nor the names of its contributors 181556Srgrimes * may be used to endorse or promote products derived from this software 191556Srgrimes * without specific prior written permission. 201556Srgrimes * 211556Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 221556Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 231556Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 241556Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 251556Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 261556Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 271556Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 281556Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 291556Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 301556Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 311556Srgrimes * SUCH DAMAGE. 321556Srgrimes */ 331556Srgrimes 341556Srgrimes#ifndef lint 3520423Sstevestatic char const copyright[] = 361556Srgrimes"@(#) Copyright (c) 1988, 1993, 1994\n\ 371556Srgrimes The Regents of the University of California. All rights reserved.\n"; 381556Srgrimes#endif /* not lint */ 391556Srgrimes 401556Srgrimes#ifndef lint 4136152Scharnier#if 0 4236152Scharnierstatic char sccsid[] = "@(#)sleep.c 8.3 (Berkeley) 4/2/94"; 4336152Scharnier#endif 4436152Scharnierstatic const char rcsid[] = 4536152Scharnier "$Id$"; 461556Srgrimes#endif /* not lint */ 471556Srgrimes 481556Srgrimes#include <stdio.h> 491556Srgrimes#include <stdlib.h> 501556Srgrimes#include <unistd.h> 511556Srgrimes 521556Srgrimesvoid usage __P((void)); 531556Srgrimes 541556Srgrimesint 551556Srgrimesmain(argc, argv) 561556Srgrimes int argc; 571556Srgrimes char *argv[]; 581556Srgrimes{ 591556Srgrimes int ch, secs; 601556Srgrimes 6124348Simp while ((ch = getopt(argc, argv, "")) != -1) 621556Srgrimes switch(ch) { 631556Srgrimes case '?': 641556Srgrimes default: 651556Srgrimes usage(); 661556Srgrimes } 671556Srgrimes argc -= optind; 681556Srgrimes argv += optind; 691556Srgrimes 701556Srgrimes if (argc != 1) 711556Srgrimes usage(); 721556Srgrimes 731556Srgrimes if ((secs = atoi(*argv)) > 0) 741556Srgrimes (void)sleep(secs); 751556Srgrimes exit(0); 761556Srgrimes} 771556Srgrimes 781556Srgrimesvoid 791556Srgrimesusage() 801556Srgrimes{ 811556Srgrimes 821556Srgrimes (void)fprintf(stderr, "usage: sleep seconds\n"); 831556Srgrimes exit(1); 841556Srgrimes} 85