busybox/coreutils/sleep.c

/*
 * 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
 *
 */

#include "internal.h"
#include <stdio.h>

const char	sleep_usage[] = " NUMBER\n"
"Pause for NUMBER seconds.\n";

extern int
sleep_main(int argc, char * * argv)
{
        if ( (argc < 2) || (**(argv+1) == '-') ) {
	    usage( sleep_usage );
	}

	if ( sleep(atoi(*(++argv))) != 0 ) {
		perror( "sleep");
		exit (FALSE);
	} else
		exit (TRUE);
}