PhantomJS remove删除

var fs = require('fs'); 
fs.remove(path);

var fs = require('fs'); 
var system = require('system'); 
var path = system.args[1]; 
var md = fs.isFile(path); 

console.log("File is present : "+fs.isFile(path)); 
console.log("Removing file "+path); 
var rd = fs.remove(path); 

console.log("File is present "+fs.isFile(path)); 
phantom.exit();

File is present: true 
Removing file test.txt 
File is present false