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filetesting.js
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filetesting.js
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//opens a file to read from, write and append to
var fs = require('fs');
fs.open('mynewfile2.txt', 'w', function(err, file){
if (err) throw err;
console.log('File opened!');
fs.writeFile('mynewfile2.txt', 'Hello world!', function (err, data){
if (err) throw err;
console.log('data written');
});
fs.readFile('mynewfile2.txt', {encoding: 'utf-8'}, function (err, data){
if (err) throw err;
console.log('data read is: ' + data);
});
fs.appendFile('mynewfile2.txt', '\nMore text!', function(err){
if (err) throw err;
console.log('more data appended');
});
fs.writeFile('mynewfile2.txt', 'this is all the text in the file', function (err, data){
if (err) throw err;
console.log('data completely replaced again');
});
fs.readFile('mynewfile2.txt', {encoding: 'utf-8'}, function (err, data){
if (err) throw err;
console.log('new data read is: ' + data);
});
});