ast_comparator/test/student_data/handout/shlab-handout/cases/32_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(argv[0], "quit")) 	
		exit(0);
	if (!strcmp(argv[0], "&"))			
		return 1;
	if (!strcmp(argv[0], "fg")){
		do_bgfg(argv);
		return 1;
	}
	if (!strcmp(argv[0], "bg")){
		do_bgfg(argv);
		return 1;
	}
	if (!strcmp(argv[0], "jobs")){
		listjobs(jobs);
		return 1;
	}
  return 0;     
}
int builtin_cmd ( char * * argv ) { if ( ! strcmp ( argv [ 0 ] , " " ) ) exit ( 0 ) ; if ( ! strcmp ( argv [ 0 ] , " " ) ) return 1 ; if ( ! strcmp ( argv [ 0 ] , " " ) ) { do_bgfg ( argv ) ; return 1 ; } if ( ! strcmp ( argv [ 0 ] , " " ) ) { do_bgfg ( argv ) ; return 1 ; } if ( ! strcmp ( argv [ 0 ] , " " ) ) { listjobs ( jobs ) ; 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 .
/* quit command */ /* Ignore singleton & */ /* not a builtin command */