/* file name: execUse.c */
#include <unistd.h>
int main () {
    char * a[3];
    a[0] = "dont care what you put here\0";
    a[1] ="--all";
    a[2] = "--time";
    a[3] = 0;
    execve("/usr/bin/who", a, 0);
    return 1;
}