Posted by joseph on July 1, 2013 ·
Sometimes you might want to uninstall large packages on a running Linux system (e.g. in order to release disk space), since these kind of packages are normally not that useful.
Here we show an example on how to list installed packages by size on Redhat and Debian system.
Posted by joseph on April 23, 2010 ·
Is there any easy ways to batch rename files in Linux? A common requirement is that the web developers may ask you to help rename all *.html files to *.htm, how can we do that?
Posted by joseph on March 31, 2010 ·
Redhat.com release another update of RHEL5 yesterday at 2010/03/30.
This minor update releases typically provide feature enhancements, bugfixes and new hardware support. From the release notes:
Posted by joseph on March 16, 2010 ·
I’m runing RHEL/CentOS for a group of database servers, and they mainly use MySQL for productive services. Recently I noticed that MySQL’s new feathers and bug fixes that comes from system updates make little sense to our needs, so I’m planing not to apply these changes on our live [...]
Posted by joseph on December 31, 2009 ·
I just successfully updated my Dell PowerEdge 1850 from CentOS 4.8 to CentOS 5.4, luckily the issues I faced were not so rare. The steps I used are listed below, may it helpful for you as well! Although this post is mainly intended for CentOS it should work on RHEL systems as well.
Before you start, [...]
Posted by joseph on November 12, 2009 ·
Recently I’m playing with Xen virtualization, and I came across one protential problem. As I need to share my guest machines to clients, I must give them root privileges… that’s whats VPS-es all about… having root access to OS without having to purchase expensive physical ones. So [...]
Posted by joseph on October 30, 2009 ·
As indicated in title, this request is probably very common for sysadmins.
For example, when a Java environment is ready, we need to make sure that JAVA_HOME is globally available for some system accounts, so that they can restart java instance smoothly.
Posted by joseph on October 23, 2009 ·
CentOS community annouced the availability of CentOS-5.4 for i386 and x86_64 Architectures this week. It’s based on the upstream release Redhat Enterprise Linux 5.4.0 and includes packages from all variants including Server and Client.
This is just an announcement email, not the release notes. [...]
Posted by joseph on October 17, 2009 ·
In a former post, we know how to use OpenVZ to create virtual system in CentOS, this article will show you how to install Windows under Xen on CentOS 5.3.
We fixed one of the problems of Windows XP under Xen. Windows XP’s inability to shut itself down completely. Windows ends up on the ‘it [...]
Posted by joseph on October 14, 2009 ·
This article will describe how to create OpenVZ container in CentOS 5.4. With OpenVZ you can create multiple Virtual Private Servers (VPS) on same hardware machine and running them simultaneously and efficiently.
OpenVZ is the open-source branch of Virtuozzo, a commercial virtualization solution widely [...]