Here is a list of tutorials for learning how to write MapReduce programs on Hadoop, the opensource MapReduce implementation with HDFS. MapReduce Tutorials The official tutorial on Hadoop MapReduce framework: http://hadoop.apache.org/docs/r1.0.4/mapred_tutorial.html. Yahoo! Hadoop Tutorial A comprehensive tutorial on Hadoop from Yahoo! Developer Network: http://developer.yahoo.com/hadoop/tutorial/. More about MapReduce To better understand the design behind MapReduce, it
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Category: Tutorial
How to Change MediaWiki’s Main Page Title and URL
Posted onMediaWiki set’s the default page (the homepage) to the “Main Page” by default. The name “Main Page” is too general and does not give more meanings. Usually for a specific site, we may change it to some meaningful name and URL. This is a configurable in MediaWiki. This tutorial introduces how to change MediaWiki’s Main
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How to Change MediaWiki’s Sidebar
Posted onMediaWiki’s Sidebar can be configured as a special page. This page’s title is “MediaWiki:Sidebar”. For example, if a MediaWiki site www.example.com is configured to use [[search-engine-friendly-url-for-mediawiki]], the URL for edit the Sidebar is: http://www.example.com/w/MediaWiki:Sidebar It may look like this: * navigation ** mainpage|mainpage-description ** recentchanges-url|recentchanges ** randompage-url|randompage ** currentevents-url|currentevents ** portal-url|portal ** helppage|help * SEARCH
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Proxy using SSH Tunnel on Windows
Posted onThis article is an instruction of how to use https://www.systutorials.com/proxy-using-ssh-tunnel/ on a Windows machine. The mechanism is similar as the one in https://www.systutorials.com/proxy-using-ssh-tunnel/ with “Proxy listening to localhost port only”. Download PuTTY PuTTY is the software we use here for port forwarding. Please download it following the links in https://www.systutorials.com/open-source-and-portable-ssh-scp-sftp-and-vnc-clients-for-windows-to-remote-control-linux/. Configure PuTTY and create a
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How To Set Mobile Skin for MediaWiki
Posted onMore and more users are browsing the Internet using a mobile device. It is preferred to provide good experience for these users. One method to service a mobile version of the page to a user with a mobile device. This tutorial introduces how to add mobile skin support for MediaWiki. Skin for mobile devices I
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Search Engine Friendly URL for MediaWiki
Posted onMediaWiki is the wiki-engine that runs Wikipedia. In this tutorial, we introduce how to configure search engine friendly URLs in MediaWiki. ==Search Engine Friendly URLs== Default MediaWiki URLs look like www.example.com/w/index.php?title=TITLE which is a little ugly. To make it more search engine friendly, we will change it to SEO-friendly URLs like www.example.com/w/TITLE. ==Enabling Search Engine
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ASCII Table and ASCII Code
Posted onThis post gives the ASCII table and ASCII code with ASCII control characters and ASCII printable characters and a tool to convert ASCII codes to ASCII characters. Introduction to ASCII table and ASCII code ASCII stands for American Standard Code for Information Interchange. An ASCII code is the numerical representation of a character since computers
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C++ Reference and Styles
Posted onC++ References Reference of the C++ Language Library, with detailed descriptions of its elements and examples on how to use its functions: http://www.cplusplus.com/reference/ C++ reference: http://www.cppreference.com/w/ C++ Styles I compile a list of C++ styles on the Internet. http://geosoft.no/development/cppstyle.html http://google-styleguide.googlecode.com/svn/trunk/cppguide.xml http://www.mactech.com/articles/develop/issue_02/C%2B%2B_Style_Guide_v007.html http://www.cs.uga.edu/~dkl/1302/Fall99/style.html
Outlook-style Email Reply Header in Thunderbird
Posted onThunderbird’s email reply header is short and not like the ones in Outlook and other email clients. Thunderbird provides several integrated reply headers. However, the Outlook-style reply header with sender, receiver, date, and other information are clear and useful (e.g. my boss cc’ed an email to me to let me handle a request and I
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How to Activate Windows 7 using MAK Activation
Posted onThe Windows 7 Multiple Activation Key (MAK) can be used to activate Windows 7 Enterprise installed with the Windows 7 Volume Licence DVD provided by Microsoft to enterprise/university customers. How to activating Windows 7 with MAK: Make sure your system is connecting to the Internet. During Windows 7 activation, Windows will connect to Microsoft.com for
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Locking iPhone Screen Rotation
Posted oniPhone’s automatic screen rotation is convenient. However, it is annoying under some situation, such as reading email in the bed. Fortunately, starting from iOS 4/iOS 5, iOS has an option to lock the screen rotation. A screenshot on iPhone (which worths a thousands words): For iOS 7 and iOS 8 For older versions of iOS
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How to Print Notes on a PDF File with Acrobat, Adobe Reader and Foxit Reader
Posted onPrint PDF with notes is not that straightforward, especially when you want specific styles of the printed notes/comments. In this post, we introduce how to print notes on a PDF file with Acrobat, Adobe Reader and Foxit Reader. Acrobat The detailed method is posted on Adobe’s blog: Printing Sticky Notes on a PDF. Excerpt of
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Setting Up POP3/IMAP Email Box on Nokia E71
Posted onThe software in Nokia E71 already support POP3 and IMAP email box. But we may lead to install Nokia messaging and setting up account of Nokia messaging. Storing our emails in remote servers isn’t a secure way. And why not use IMAP directly if it is supported by the system software? How to set up
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Latex Cheat Sheet
Posted onLatest has many commands and it is not easy to quickly remember them all. Then, a cheat sheet will be very useful. Here is a collection of cheat sheets for Latex that I collected from the Web. Latex cheat sheet Latex cheat sheet by Winston Chang: Download latex cheat sheet. LaTeX Math Symbols https://web.archive.org/web/20190707092927/http://web.ift.uib.no/Teori/KURS/WRK/TeX/symALL.html
HP Compaq BIOS Crisis Recovery from a Failed BIOS Flashing Using a USB Flash Disk
Posted onI tried to flash my HP Compaq CQ35-240TX’s BIOS to F.15 but unfortunately failed. The computer turned to white screen. When I restarted (powered off then boot again), this is no response any more: the hard disk and caps lock’s LED keep blinding. I thought “Oh my God! I must send it to HP to
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Thunderbird Tips: Default Descending Email Sort Order and Inline Quote When Reply
Posted onThunderbird is a great email client and what make it special is deeply configurable like Firefox. For me, I like to view email in the descending sort order and inline quote relied email content when replying emails. Let’s look at how to set the default order as descending sort order and quote mode as inline
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Keep Firefox Open After Closing the Last Tab
Posted onFirefox should always be ready there for us, right? Even after we closing the last tab, we would like firefox to be still open. At least I like to treat it in this way. But unfortunately, Firefox will close after we closing the last tab as default in version 3.5. But the good news is
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Essential Firefox Add-ons to Make Firefox Better
Posted onFirefox is highly configurable and there are lots add-ons for it. Addons make Firefox to be good. In this post, I list a set of the best add-ons that I use daily and make my life easier and happier. Essential Firefox addons Screengrab! to make screenshots and save to files or to clipboard. Foxy Gestures
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Set Up SSH Server on Windows XP
Posted onIt is useful sometimes to set up a sshd server on a Windows. One example is using remote forwards tunnel to pass through the firewall. My platform is Windows XP SP3. The sshd server is sshwindows. It can be dowloaded from here: http://sshwindows.sourceforge.net/ . The version I use here is 3.8p1-1 20040709. It is really
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Java与C++在语言方面上的不同
Posted on1，Java抛弃了头文件、预处理机制、goto语句和多维数组。 2，Java不支持指针。 3，Java抛弃了联合体和结构体。 4，Java不支持独立函数。所有函数必须在类中声明。 5，Java不支持多重继承，可以使用接口模拟多重继承。 6，Java不支持运算符重载。 7，Java中布尔型不再用整数来代替。 8，Java中主函数必须有一个字符串类型的参数。 Java抛弃的C++中的这些机制和结构多数都是“危险”的，减少了语言的复杂性，增强了安全性，虽然在一定程度上减少了其灵活性。