#include <stdio.h>
#include <unistd.h>     /* for chdir and execlp */

/* Simple exec example code - this becomes ls -al */

int main() {
  /* change current working directory to / */
  chdir("/");

  /* run ls -al using execlp */
  if (execlp("ls","ls","-al",NULL)) {
	perror("Huh?");
  }
  return(0);  /* only gets here is execlp failed! */
}