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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

  Samsung loses $12.3 billion in one day

Following the court decision last Friday on Samsung's infringement of Apple's patents, Apple did not stop, they immediately submitted an application to the court to ban some Samsung smartphones, including 8 types of Samsung smartphones sold in United States. Apple listed in detail in the document what patents these phones infringed. These 8 smartphones are: Galaxy S 4G Galaxy S2 (AT&T) Galaxy S2 (Skyrocket) Galaxy S2 (T-Mobile) Galaxy S2 Epic 4G Galaxy S Showcase Droid Charge Galaxy Prevail...

   Samsung,Apple,Patent,Lose     2012-08-27 21:37:24

  Not better, but different

The most important feature of Apple products is usability--Simple, aesthetic, easy to use.Their products may not necessarily the most powerful, but they usually are the easiest to use. Following picture show a Mac (left) and a PC(right), which one looks better?Many products are trying to mimic these features, but one problem comes out:It's hard to keep a product simple while providing so many new features.If you continuously add new features to your product,  your product will become more c...

   Market positioning,Product manager     2012-05-19 13:29:20

  Will PHP __autoload() function really affect performance?

IntroductionRegarding to PHP performance, the most frequently discussed is the __autoload() function. Many people say that this function will affect the performance very much, some other people say that opcode will affect __autoload() as well. So we will have some tests on these two.EnvironmentPHP 5.3.9 -- Launch under fastcgi modeNginx 1.1.12eAccelerator 0.9.6.1ScreenshotsLaunch pageeAccelerator(In php.ini) configurationFile structure(each Test file has over 6000 lines of code)Testing With e...

   PHP,__autoload(),opcode,performance     2012-05-09 11:25:26

  Content based HTTP Cache

Browsers may cache the webpages we visited, when user types a URL on the address bar, the browser may cache the webpage returned from server while displaying it. If there is no update on the webpage, then next time when the browser requests the same page, it will not download the page again, instead it will load the cached page. If the website explicitly specify that the page is updated, then the browser will download the page again from the server. What's HTTP Cache? You may be familiar with th...

   HTTP Cache,Web crawler     2013-05-24 05:12:59

  Where are the top 100,000 most visited websites hosted?

Do you know where are the websites you visit every day hosted online? There are more and more websites hosted on cloud server now as the stability, scalability and cost effective features of cloud. Recently hostcabi released an infographic which shows some statistics about the top 100,000 most visited websites(according to Alexa). The top 100,000 most visited websites have spread their hosting over 6 continents, 102 countries, 621 cities and 1,024 hosting providers SoftLayer(IBM), AWS, GoDaddy a...

   Web hosting,Cloud service     2013-11-28 05:48:44

  Windows 8.1 will be released on October 18

According to TheVerge, Microsoft Windows 8.1 will be released on October 18. Windows 8 users can download the free update on Windows Store one day before the release date, There will be a formal release press on October 18. In next few weeks, Windows 8 RTM will be open to PC manufacturers and partners. In this year's WPC, Microsoft demonstrated their latest Windows 8.1 on various devices most of the time, including the 8-inch Tablet PC, laptops, desktops and even streamed content from PC to Xbo...

   Windows 8.1,Release date     2013-08-14 11:49:09

  Free jQuery UI themes

jQuery UI is a jQuery User Interface library, it provides many frequently used components and functions. It consists of datepicker, slider, progress bar and drag and drop support etc. Also it has many themes, you can use ThemeRoller to customize your own theme. But with ThemeRoller, we can still find the shadow of jQuery UI. If you want some highly customized, free and high quality jQuery themes such as Bootstrap, Windows-Metro, then the following themes may suit you. 1. jQuery UI Bootstrap jQu...

   jQuery UI, Theme     2012-10-20 10:59:20

  Gmail supports 10 GB attachment after integrating with Google Drive

Google today announced Gmail allows users to send attachment up to 10GB after integrating with Google Drive, the attachment size can be 400 times larger than traditional mail attachment size.Google also added another feature recently, it will pop up a separate window when writing new email. The integration of Gmail with Google Drive will introduce one Google Drive button at the bottom of the popup window, as a solution for sending large attachment.At the same time, because the attachment will b...

   Google Drive, Gmail,SkyDrive,attachment     2012-11-28 11:12:56

  8 very useful and free web security testing tools

With more pervasive of web applications, web security threats are becoming increasingly prominent. Hackers gain web server control by exploiting web server vulnerabilities and SQL injection vulnerabilities, then they may tamper with web content, or steal important internal data, the more serious is to inject malicious code into web pages to affect visitors of websites. Attention is gradually warming up to Web Application Security. Here we recommend eight very useful and free web security testing...

   Website, security,Web security,Attack     2012-07-22 10:59:09

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