sleep.c revision 1556
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 351556Srgrimesstatic char 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 411556Srgrimesstatic char sccsid[] = "@(#)sleep.c 8.3 (Berkeley) 4/2/94"; 421556Srgrimes#endif /* not lint */ 431556Srgrimes 441556Srgrimes#include <stdio.h> 451556Srgrimes#include <stdlib.h> 461556Srgrimes#include <unistd.h> 471556Srgrimes 481556Srgrimesvoid usage __P((void)); 491556Srgrimes 501556Srgrimesint 511556Srgrimesmain(argc, argv) 521556Srgrimes int argc; 531556Srgrimes char *argv[]; 541556Srgrimes{ 551556Srgrimes int ch, secs; 561556Srgrimes 571556Srgrimes while ((ch = getopt(argc, argv, "")) != EOF) 581556Srgrimes switch(ch) { 591556Srgrimes case '?': 601556Srgrimes default: 611556Srgrimes usage(); 621556Srgrimes } 631556Srgrimes argc -= optind; 641556Srgrimes argv += optind; 651556Srgrimes 661556Srgrimes if (argc != 1) 671556Srgrimes usage(); 681556Srgrimes 691556Srgrimes if ((secs = atoi(*argv)) > 0) 701556Srgrimes (void)sleep(secs); 711556Srgrimes exit(0); 721556Srgrimes} 731556Srgrimes 741556Srgrimesvoid 751556Srgrimesusage() 761556Srgrimes{ 771556Srgrimes 781556Srgrimes (void)fprintf(stderr, "usage: sleep seconds\n"); 791556Srgrimes exit(1); 801556Srgrimes} 81