src/randsleep.c


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#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <unistd.h>

int main (int argc, char **argv) {
	long maxsleep;
	struct timespec ntime;

	if (argc < 2) {
		fputs("Usage: randsleep <max> [<cmd>]\n", stdout);
		return 1;
	}

	maxsleep = atol(argv[1]);

	if (clock_gettime(CLOCK_REALTIME, &ntime) == -1)
		perror("clock_gettime");

	srand(ntime.tv_nsec);

	sleep((rand() % maxsleep) + 1);

	if (argc > 2) {
		execvp(argv[2], argv + 2);
		perror("execvp");
	}

	return 0;
}