sbase/sleep.c

32 lines
435 B
C

/* See LICENSE file for copyright and license details. */
#include <limits.h>
#include <stdlib.h>
#include <unistd.h>
#include "util.h"
static void
usage(void)
{
eprintf("usage: %s num\n", argv0);
}
int
main(int argc, char *argv[])
{
unsigned int seconds;
ARGBEGIN {
default:
usage();
} ARGEND;
if (argc < 1)
usage();
seconds = estrtonum(argv[0], 0, UINT_MAX);
while ((seconds = sleep(seconds)) > 0)
;
return 0;
}