minix/commands/sleep/sleep.c
2010-05-12 16:28:54 +00:00

34 lines
569 B
C

/* sleep - suspend a process for x sec Author: Andy Tanenbaum */
#include <sys/types.h>
#include <stdlib.h>
#include <unistd.h>
#include <minix/minlib.h>
_PROTOTYPE(int main, (int argc, char **argv));
int main(argc, argv)
int argc;
char *argv[];
{
register seconds;
register char c;
seconds = 0;
if (argc != 2) {
std_err("Usage: sleep time\n");
exit(1);
}
while (c = *(argv[1])++) {
if (c < '0' || c > '9') {
std_err("sleep: bad arg\n");
exit(1);
}
seconds = 10 * seconds + (c - '0');
}
/* Now sleep. */
sleep(seconds);
return(0);
}