/* file smallsh.h */
#include <stdio.h>
#include <fcntl.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/wait.h>
#define  EOL 1
#define  ARG 2
#define  AMPERSAND 3
#define  SEMICOLON 4
#define  RIDIRIN 5
#define  RIDIROUT 6
#define  PIPE 7 
#define  MAXARG  112
#define  MAXBUF  112
#define  FOREGROUND 0
#define  BACKGROUND 1
#define  MASK 0644
#define  NOARG 0