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ssh/scp are convenient and handy tools on Linux. Is it possible to further improve its speed/performance, especially when transferring files that are large (GBs, not MBs or KBs)? The answer is of course yet. ssh supports several ciphers. The ciphers used have a large impact on the performance. Jens Neuhalfen [...]
Thu, Apr 24, 2014 1:39:00 PM, Continue reading at the source
WordPress can be very fast after some (small) effort on performance optimization with the help from its plenty of plugins. Two of the directions are using cache to cut down the number of database queries and optimizing PHP’s performance with opcode cache. In this post, we introduce how to speed [...]
Wed, Apr 02, 2014 5:34:00 PM, Continue reading at the source
I use Emacs in terminals and start/close Emacs frequently as needed like in a file checking-editing-closing loop. However, Emacs seems take some time to start up especially some heavy modes are used. How to make Emacs start up faster? (If you just want the solution/script first, find the command in [...]
Mon, Mar 31, 2014 2:59:00 AM, Continue reading at the source
Gnome 3 is great and I can understand that it emphasizes on simplicity. However, the configuration settings for Gnome 3 does not provide tools for certain functions that I need. One of them is customizing the fonts. This post will summarize the tools/tips that I adopted to customize the fonts [...]
Sun, Mar 30, 2014 8:01:00 AM, Continue reading at the source
Vim is a fast and handy editor on *nix systems. Like Emacs, Vim has a steep learning curve as you get constantly get new things. However, the effort deserves it as you efficiency is highly improved. Here, I summarize the tips and howtos I learned using Vim. Some previous posts [...]
Tue, Mar 25, 2014 11:42:00 AM, Continue reading at the source
I ever introduced seting up git server using SSH or gitosis. However, gitolite is the way to go for managing git servers if you want an lightweight authentication layer. gitolite provides many very usefull features which can control each user’s right on each branch. I set up one gitolite git [...]
Fri, Mar 07, 2014 12:13:00 AM, Continue reading at the source
Indeed, with RAII in C++, it is much easier to write and read the code that allocats/deallocats resource in the constructor/destructors. void foo() { // a and b can acquire resources, such as lock, file // or memory. // They can also throw exceptions for error handling. A a(); if [...]
Thu, Mar 06, 2014 8:10:00 AM, Continue reading at the source
Fedora is a popular distro supported by the RedHat Corporation. This article recommends you some infrastructure software and how to install them in details. Minimize and Maximize window 1, Install software gnome-tweak-tool # yum install gnome-tweak-tool 2, Start gnome-tweak-tool and set minimizing and maximizing functions as follows. Actually, gnome-tweak-tool has [...]
Thu, Feb 27, 2014 8:37:00 AM, Continue reading at the source
Software you will need 1, Putty 2, Real VNC viewer 3, twm (lightweight desktop). On fedora (centos, redhat): sudo yum install twm (on other distros, you may need other commands, or download source code and install it). Specific steps 1, Enter your Host name and port in putty. 2, Set [...]
Fri, Feb 21, 2014 7:36:00 AM, Continue reading at the source
It is nice to set up some photo gallery on the web and share with friends and family. Some online services are good and convenient. But if you want to host it on your own domain and control them by yourself, there are also many scripts available. Usually, we want [...]
Fri, Feb 21, 2014 4:13:00 AM, Continue reading at the source

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