busybox/coreutils/sleep.c

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/*
* Mini sleep implementation for busybox
*
*
* Copyright (C) 1995, 1996 by Bruce Perens <bruce@pixar.com>.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
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#include "internal.h"
#include <stdio.h>
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const char sleep_usage[] = " NUMBER\n"
"Pause for NUMBER seconds.\n";
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extern int
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sleep_main(int argc, char * * argv)
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{
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if ( (argc < 2) || (**(argv+1) == '-') ) {
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usage( sleep_usage );
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}
if ( sleep(atoi(*(++argv))) != 0 ) {
perror( "sleep");
exit (FALSE);
} else
exit (TRUE);
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}