ast_comparator/test/student_data/handout/shlab-handout/cases/prev_14_tsh.c
/*
 * builtin_cmd - If the user has typed a built-in command then execute
 *    it immediately.
 */
If the user has typed a built-in command then execute
it immediately.
If the user has typed a built - in command then execute it immediately .
int builtin_cmd(char **argv)
{ 
  if (strcmp("quit", argv[0]) == 0) { 
    exit(0);
  } else if (strcmp("jobs", argv[0]) == 0) { 
    listjobs(jobs);
    return 1;
  } else if (strcmp("fg", argv[0]) == 0) { 
    do_bgfg(argv);
    return 1;
  } else if (strcmp("bg", argv[0]) == 0) { 
    do_bgfg(argv);
    return 1;
  }
  return 0;     
}
int builtin_cmd ( char * * argv ) { if ( strcmp ( " " , argv [ 0 ] ) == 0 ) { exit ( 0 ) ; } else if ( strcmp ( " " , argv [ 0 ] ) == 0 ) { listjobs ( jobs ) ; return 1 ; } else if ( strcmp ( " " , argv [ 0 ] ) == 0 ) { do_bgfg ( argv ) ; return 1 ; } else if ( strcmp ( " " , argv [ 0 ] ) == 0 ) { do_bgfg ( argv ) ; return 1 ; } return 0 ; }
builtin_cmd - If the user has typed a built-in command then execute
    it immediately.
builtin_cmd - If the user has typed a built - in command then execute it immediately .
//TODO2 //quit command //jobs command //fg command //bg command /* not a builtin command */