text: // init: The initial user-level program
  
  #include "types.h"
  #include "stat.h"
  #include "user.h"
  #include "fcntl.h"
  
  char *argv[] = { "sh", 0 };
  
  int
  main(void)
  {
    int pid, wpid;
  
    if(open("console", O_RDWR) < 0){
      mknod("console", 1, 1);
      open("console", O_RDWR);
    }
    dup(0);  // stdout
    dup(0);  // stderr
  
    for(;;){
      printf(1, "init: starting sh\n");
      pid = fork();
      if(pid < 0){
        printf(1, "init: fork failed\n");
        exit();
      }
      if(pid == 0){
  	
  //	printf(1, "MYINIT\n");
  	
        exec("sh", argv);
        printf(1, "init: exec sh failed\n");
        exit();
      }
      while((wpid=wait()) >= 0 && wpid != pid)
        printf(1, "zombie!\n");
    }
  }
  