Annotation of prex/usr/bin/sleep/sleep.c, Revision 1.1
1.1 ! nbrk 1: /*
! 2: * Copyright (c) 1988, 1993, 1994
! 3: * The Regents of the University of California. All rights reserved.
! 4: *
! 5: * Redistribution and use in source and binary forms, with or without
! 6: * modification, are permitted provided that the following conditions
! 7: * are met:
! 8: * 1. Redistributions of source code must retain the above copyright
! 9: * notice, this list of conditions and the following disclaimer.
! 10: * 2. Redistributions in binary form must reproduce the above copyright
! 11: * notice, this list of conditions and the following disclaimer in the
! 12: * documentation and/or other materials provided with the distribution.
! 13: * 3. Neither the name of the University nor the names of its contributors
! 14: * may be used to endorse or promote products derived from this software
! 15: * without specific prior written permission.
! 16: *
! 17: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 18: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 19: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 20: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 21: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 22: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 23: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 24: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 25: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 26: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 27: * SUCH DAMAGE.
! 28: */
! 29:
! 30: #include <stdio.h>
! 31: #include <stdlib.h>
! 32: #include <unistd.h>
! 33:
! 34: #ifdef CMDBOX
! 35: #define main(argc, argv) sleep_main(argc, argv)
! 36: #endif
! 37:
! 38: static void usage(void);
! 39:
! 40: int
! 41: main(int argc, char *argv[])
! 42: {
! 43: int ch, secs;
! 44:
! 45: while ((ch = getopt(argc, argv, "")) != -1)
! 46: switch(ch) {
! 47: case '?':
! 48: default:
! 49: usage();
! 50: }
! 51: argc -= optind;
! 52: argv += optind;
! 53:
! 54: if (argc != 1)
! 55: usage();
! 56:
! 57: if ((secs = atoi(*argv)) > 0)
! 58: (void)sleep(secs);
! 59: exit(0);
! 60: }
! 61:
! 62: static void
! 63: usage(void)
! 64: {
! 65:
! 66: fprintf(stderr, "usage: sleep seconds\n");
! 67: exit(1);
! 68: }
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