sbase/sleep.c

24 lines
484 B
C

/* See LICENSE file for copyright and license details. */
#include <stdlib.h>
#include <unistd.h>
#include "util.h"
int
main(int argc, char *argv[])
{
char *end;
unsigned int seconds;
if(getopt(argc, argv, "") != -1)
exit(EXIT_FAILURE);
if(optind != argc-1)
eprintf("usage: %s seconds\n", argv[0]);
seconds = strtol(argv[optind], &end, 0);
if(*end != '\0')
eprintf("%s: not a number\n", argv[optind]);
while((seconds = sleep(seconds)) > 0)
;
return EXIT_SUCCESS;
}