Anytime I’ve been running a perl based script on my leopard box I got this really irritating output with whatever else I was expecting:

perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LC_ALL = “En_US”,
LANG = (unset)
are supported and installed on your system.
perl: warning: Falling back to the standard locale (“C”).

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The first time you use the Perl module CPAN, a script is executed in order to properly configure several options (like the location of tar, gzip and unzip files, the cache size for the build directory, etc).

If you want to modify these configuration options at a later time, you can do it in 2 ways:

- Manually, modifying the configuration files

You can either modify the user-specific file (usually ~/.cpan/CPAN/MyConfig.pm) or the system-wide configuration file (stored somewhere in the perl module directory tree, look for a directory named CPAN that holds a file named Config.pm)
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UPDATED: January 31st, 2011: Python 2.6 now is in the normal EPEL repositories. There are some changes in the explanations below

I’ve always hated Centos, probably because I’ve never been in a situation where I had to deal with the network security (other than the obvious stuff to ward off cross-site-scripting attacks and the such). Of course, that being the case, I did wind up dealing with CentOS at work and I had to get Django, Python 2.6 and the such functional.

Centos throws a few curveballs your way.. YUM is built on Python 2.4, and upgrading to a newer version supposedly breaks the program. Going back to Python 2.4 was not an option, mainly because all my python experience is on Python 2.5 / 2.6, and I don’t want to go back and learn an older non-maintained version of the language for a server. On the other hand, I didn’t want to lobby to just install Ubuntu.

This assumes you already have a normal LAMP setup. Furthermore, I’m assuming you do not have mod_python installed. This threw me for a loop for the longest time, so take this for what its worth.

The VERY FIRST STEP (if you are running a clean install of CentOS) is to get the dev tools installed.
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What is LiteSpeed Web Server ?

LiteSpeed Web Server is the leading high-performance, high-scalability web server. It is completely Apache interchangeable so LiteSpeed Web Server can quickly replace a major bottleneck in your existing web delivery platform. With its comprehensive range of features and easy-to-use web administration console, LiteSpeed Web Server can help you conquer the challenges of deploying an effective web serving architecture.

In this tutorial we will upgrade current litespeed PHP to support PHP 5.3.0, Mail header patch and suhosin patch
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When you use chown to change ownership of a file or directory, it will work but with Symlink (Created by using lncommand), you can’t do that. When you do it, it will fail and you may not know that since there is no error message or anything to let you know. So, to change ownership for Symlink, you need to use option -h. Below is an example :
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