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  Use rsync to delete mass files quickly in Linux

Yesterday I encountered an issue to delete many log files in my Linux workstation, there were around 100,000 files to be deleted. These are log files and they grow very fast, and we need to delete them frequently. Usually we would use rm -rf * to delete these files, but we may need to wait for a relative long time if there are too many files. So we must adopt some unusual way. Fortunately, we can use rsync to delete mass files in one shot. 1. Install rsync yum install rsync 2. Create a new empty...

   rsync,delete file, demo     2012-11-13 10:44:50

  Steps to connect to MySQL on Windows Command Line

To connect to MySQL database on Windows through Command line, there are some steps to be followed.1. You need to start the MySQL service, you can go to Start->Control Panel->System and Securities->Administrative Tools->Component Service->Services(local), then on the right panel, you can find one service name called MySQL and you should start this service2. Go the the MySQL installation folder, which is something like this : C:\Program Files\MySQL\MySQL Server 5.1. In this folder, ...

   MySQL,Window,Command line,Connection,mysqld     2011-11-05 08:22:39

  QScrollArea Scrollbar Display Solution

Qt framework is a popular C++ GUI framework developed by Nokia. And it is also cross platform compatible. Many developers are using Qt to develop C++ GUI programs. In Qt, some important components are deserved our close attention. Many developers faced the problem when they put some widgets in a QScrollArea widget and they want it to display scroll bars when the widgets inside the QScrollArea overflows. After many experiments, I propose a way which can show scroll bars as you expected. The...

   C++,Qt,GUI,QScrollBar,ScrollBar,Not display,Solution     2012-03-03 07:48:36

  Chrome extension to display desktop notification

Have you ever thought about writing extension for web browsers so that we can complete some tasks easily. Do you think writing extension for browsers is very difficult? You have no clue where to begin? On Chrome, this isn't any problem now as long as you know how to write HTML,CSS and JavaScript. We will show one example of Chrome extension today. The extension will display a desktop notification on your desktop. You need to create two files here, one is the notification.json which is the config...

   Chrome extension,Desktop notification,Example     2013-06-29 22:23:51

  Add ContextMenu to a customized View in Android

In Android, we may sometimes need to add ContextMenu to a View, it's not so easy to add ContextMenu to a customized View. Here we explain how to add ContextMenu to a customized View. First, we may need to create View.OnCreateContextMenuListener so that the customized view can register for it. Here is the class definition: public class GraphView extends View {     private View.OnCreateContextMenuListener vC = new View.OnCreateContextMenuListener() {       &...

   Android, ContextMenu,Customized view     2012-11-04 07:10:40

  Be careful when running knife vault command

While using Chef, one would frequently use knife commands which are used to manage resources on the Chef server. One can list all nodes, data bags, vault items and many other stuff on the Chef server. In this post, we would cover one command which may need your attention when using it -- knife vault. On Chef server, one can store data to data bags which can be accessed by registered clients. These data bags usually store the data in plain text format. In some cases, one would need to store data ...

   KNIFE VAULT,KNIFE DATA BAG,CHEF-VAULT,CHEF     2017-08-19 00:26:54

  How to Create Custom Textures using Filters & Layers?

Textures are an important and integral part of the design world. You would find textures in every nook and corner of your life, in every space across your home. For a long time people have looked at Photoshop as a tool to manipulate photos and make them look the way you want it to appear. But, that’s not all to Photoshop. You can create interesting textures, and create amazing design works using Photoshop too. All you need is a design hand, and some basic understanding of how to use it. He...

   Photoshop     2014-08-01 05:46:07

  Building an iPhone application.

One of my New Years resolutions was to finally learn the iOS SDK and build a 'real' application.I am happy to report that progress is going really well and wanted to share something that I have noticed about iOS programming.It only looks scary... it's not. It's actually very easy.Now, I am not building Mail, Angry Birds or Photosynth or anything, but the core concepts of the SDK are not that bad once you spend some time learning delegation. If you don't understand delegation, iOS programmi...

   Apple,iOS,Application development     2012-01-28 07:03:36

  Frequently used Git commands

Git configuration git config --global user.name "robbin" git config --global user.email "fankai@gmail.com" git config --global color.ui true git config --global alias.co checkout git config --global alias.ci commit git config --global alias.st status git config --global alias.br branch git config --global core.editor "mate -w" # Configure Editor to use textmate git config -l #List all configurations User's git configuration file : ~/.gitconfig Frequently used Git commands Check、add...

   Git,Command     2013-03-11 19:41:06

  Package Control doesn't show up in Sublime Text 3

Package Control is a package management console for managing packages in Sublime Text. It is frequently used to install, update packages. In Sublime Text 3, the Package Control package can be installed by following instructions at https://packagecontrol.io/installation After installation, when you press Ctrl + Shift + P, a dialog with a text field will show up and package control commands can be typed and executed.  However, if you don't see the expected package control commands ...

   SUBLIME TEXT 3,SUBLIME TEXT,PACKAGE CONTROL     2016-09-25 09:35:07

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