Posted by joseph on March 19, 2013 ·
Rails has announced the availability of 3 news versions today, 3.2.13, 3.1.12, and 2.3.18, these releases contain important security fixes. It is recommended users upgrade as soon as possible.
Posted by joseph on March 12, 2013 ·
Zend Optimizer+ is to be integrated into the currently-in-development PHP 5.5. The announcement was made by Zeev Suraski, CTO and co-founder of Zend Technologies.
Posted by joseph on February 24, 2013 ·
As system administrators, we’d better know SystemTap and be able to assemble its existed recipes for comprehensive system analysis. When I am on my way to make a collection of systemtap scripts, I realize that I should give a brief introduction to this powerful design first, although it has been [...]
Posted by joseph on February 22, 2013 ·
The first release candidate of Debian 7.0 (a.k.a. Wheezy) was released yesterday. As always, it comes with lots of attractive designs. Here is a list of the major ones that may draw your attention.
Posted by joseph on January 18, 2013 ·
Fedora Linux version 18 has been released today at Jan, 15. Fedora Linux is considered as the third most popular Linux distribution, behind Ubuntu and Mint for desktop usage. The new version comes with several new features such as – an installer that is rewritten and redesigned from the ground [...]
Posted by joseph on January 13, 2013 ·
I had occasion recently to try and figure out how to use the builtin firewall to prevent some “bot” from hitting the services running on a Macbook. Mac OS X comes with the FreeBSD firewall program that called IPFW. It’s a very powerful tool and gives you good abilities to manage your [...]
Posted by joseph on September 23, 2012 ·
In our time, pictures that are generated by digital cameras are usually some megabytes in size, which is really big for a convenient use. This post is about a collection of command-line tools that can be used to do lossless optimization for different types of pictures, in order to keep them in a reasonable [...]
Posted by joseph on August 26, 2012 ·
When your working environment grows, services may have dependencies with each other, and this would affect your implementation of an effective monitoring solution. In typical cases, the status of a service cannot be judged simply by itself, and we have to query the status of its brother (upstream, or [...]
Posted by joseph on August 25, 2012 ·
Well, this is just a forwarded version from Xaprb.com, the highlighted points are a good summary. I don’t fully understands all the germs till now. The manual page is worth a careful read if you want to know more details.
Posted by joseph on August 23, 2012 ·
Note that this is a forwarded version from serverfault.com, and the original post is here.
Xen is an hypervisor that runs on metal (the pc / server) and then hosts virtual machines called domains.