#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/wait.h>

int main(int argc, char *argv[]) {
	pid_t pid;
	
	pid = fork();
	
	if (pid == 0) {
		if (execlp("ps", "ps", "-l", NULL) == -1)
			{ 
				perror("dans le exec");
				exit (0);
			}
		
	} else {
		wait(NULL);
	}
	return EXIT_SUCCESS;
}