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

void mysimplesystem(char *str)
{
  int pid, stat;

  if (fork() == 0) {
    /* run command str */
    exit(20);
  }
  
  pid = wait(&stat);
  if (WEXITSTATUS(stat) != 0) {
    printf("command %s failed (exit code %d)\n", str, WEXITSTATUS(stat));
  } else 
    printf("command %s success (exit code 0)\n", str);
}

int main() 
{
  char buf[100];
  char cmd[100];

  while (fgets(buf, 100, stdin)) {
    sscanf(buf, "%s", cmd);
    if (strcmp(cmd, "quit") == 0) exit(0);
    mysimplesystem(cmd);
  }
}