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  Recover deleted file in Linux EXT3 file system

Environment : CentOS 5.3 x86_64, /dev/sdb1 is the data segment /data0. EXT3 file system. Problem : /data0/tcsql/cankao/phpcws-1.5.0/httpcws.cpp is deleted mistakenly and httpcws.cpp is not backed up. It will take much time to rewrite this program again. So we must recover it back. debugfs is feasible in EXT2 file system, but in EXT3 file system, it's not very useful. There is one open source software called ext3grep which can help us recover deleted file in EXT3 file system. The recovery steps a...

   Linux,EXT3,File recovery     2013-08-16 07:06:45

  JQuery Mobile App Development Tips

Over the recent years, jQuery has been considered as a popular javascript library for creating rich interface websites and applications. And since the framework was initially meant to design desktop browsers, it doesn’t comprise of many features for building mobile apps. Thus, JQuery Mobile app development came into existence. Prominent jQuery development company offers  cutting-edge framework, a range of user interface elements and features for developers to develop innovative and us...

   JQUERY DEVELOPMENT COMPANY,JQUERY DEVELOPMENT COMPANY INDIA,JQUERY DEVELOPERS     2017-07-27 03:59:47

  Handy PHP functions should be in your toolkit

When developing projects, there are always some common work should be accomplished, for example, encrption/decryption, get IP. As a PHP developer, you should have a list of the handy functions in your toolkit so that you can pick up in every project you work on. Here is a summary of some handy PHP functions. 1. PHP encryption/decryption Encryption/decryption can be used when storing user confidential information such as passwords. Below function uses base64 and MD5 to accomplish encryption/decry...

   PHP,function,real IP,SQL injection     2014-12-06 08:46:08

  Send email from Ubuntu command line

First install exim4 and exim4-config using the package manager then install mailx sudo apt-get install mailutils and follow the prompts once this is set up use the command “mail” to check your mail. if you would like to send mail type “mail” followed by the email address to mail it to eg mail me@examplecom enter the subject and press enter the body and keep pressing enter as many times as you need to, when your body is finished, press “Ctrl” and “D" toge...

   Ubuntu,Email,Command line,mailutils     2011-04-25 15:58:10

  How to Develop a Successful SEO Strategy for Your Startup

SEO is usually viewed as under-the-table formula manipulations and trickery, once actually it’s simply a series of core steps and actions you wish to require, to create your web site rank higher. An economical SEO strategy may be countermined to the subsequent three parts, that create the entire issue look less daunting in spite of everything.   Step 1: On-site Optimization On-site optimization strategy consists of these subsequent elements: Your Content Website Structure Layout of ...

   SEO,MARKETING     2016-03-18 15:33:37

  PHP advisory file lock : flock

When we process a file in PHP, we may often need to acquire a lock so that other scripts cannot edit the same file at the same time. There is a flock() function in PHP which can help us lock the file we want to process. But there is one issue we should take care. Recently, ffb encountered one issue while he was trying to lock a file handle. The codes are below: $filename = "/tmp/lock.txt";      $fp = fopen($filename, "r+");   if (!$fp...

   flock(),advisory locking,PHP     2013-04-23 11:42:48

  Push docker image to remote AWS ECR

With the popularity of distributed and large-scale systems, there are more and more adoptions of cloud services. One of the most popular container in the market is Docker and one of the most popular cloud service provider is AWS. From development perspective, there is frequent need to push local docker image to remote ECR for debugging or testing purpose. Normally when a code change is done and the committed change would go through a series of process like code review, push to remote repo, merge...

   CLOUD,AWS,DOCKER,AWS ECR     2020-12-13 04:12:26

  Java Development : Overcomes Challenges of Security, Flexibility, and Performance

While launching any web application, a development company faces a challenge that is choosing the programming language for developing it. Though, there are many options available for companies to deliver app solution to businesses, such as .net, C++, Python, PHP, Ruby, and their derivatives; still many believe that java can be a good choice for development of apps. A java development company can make amazing app solutions by leveraging their development team’s skills and expertise. But the...

   Java development services     2015-05-20 09:05:50

  Examples of bad design

Good designs always help users solve their problems in a convenient and familiar way. It takes little or no time for users getting used to the product with a good design. In contrast, bad designs frequently introduce confusion and complexity to users. Before we design any product, we should think carefully about every aspect of the product. We share some really bad design here to show how they can affect people's life. 1. USB Connector Have you ever put one in right on the first try? We frequen...

   Bad design,Usability,Web design     2013-09-25 22:57:49

  Start to work with rollup.js to pack JS files

rollup.js is a module bundler for JavaScript. It compiles small piece of JavaScript modules spreading in different files into a single larger standardized ES code file. This post will show some entry level usage for this library. Introduction Normally a bundler tool would compile a few small JavaScript files into a single JavaScript so that web browser can read, parse and render it properly. A bundler tool may be needed because of a few reasons: Some early stage browsers don't understand module...

   ROLLUP.JS,COMMONJS,ES MODULE,BUNDLE,WEBPACK     2022-06-12 00:00:14

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