Getting certified - RHCSA and RHCE - A Study Guide

I see a lot of need for a good self-help study guide for preparing for Redhat's RHCSA (EX200) and RHCE (EX300) examinations.

I am starting an effort in this direction, primarily to help me consolidate my knowledge in the area.

Use the Comments/Contact forms to reach me if you would like to contribute to this.

My first Drupal core patch is live!

My first Drupal core patch, that corrects a repeating "have to" in one of the function comments in system.api.php, has gone live in today's Drupal 7 release (version 7.17).

Here's the Issue Post on


[HOW-TO] Installing Redmine 1.4.x (Project Management Suite + Issue Tracker + ...) with git integration and incoming emails support, on a hosting server with cPanel version 11.x

[SOLVED] Drupal - How to fix PHP Fatal error: Call to undefined function curl_init() on Ubuntu linux

One of the Drupal sites that we got to work with had this issue. The original server that the site was hosted on did not have any issue. But the issue showed up when it was transferred over to a new server.

This usually happens when you are missing the php5-curl library.

On Ubuntu, just run the following commands in your terminal to fix this:

sudo apt-get install php5-curl
sudo /etc/init.d/apache2 restart

If not on Ubuntu, check for the correct alternative to 'apt-get' for your distribution.

[SOLVED] Error when installing modules in Drupal 7 from admin/modules/install - Exception: Invalid checksum for file...calculated, 0 expected in Archive_Tar...line 635 of modules/system/

Drupal 7 provides a feature that allows you to install a new module via the Drupal interface itself, without entering your hosting server's cPanel/alternative File Manager to upload files.

That works like a charm for most hosting servers and makes installing modules/themes a breeze on Drupal.

For some others, trying to install modules that way (from admin/modules/install) might just bring up something that looks like the following:
Exception: Invalid checksum for file ... calculated, 0 expected in Archive_Tar->_error() (line 635 of .../

Here's how to fix this:

Setting up a LAMP (Apache, MySQL, PHP) development environment on Ubuntu 11.04 (Natty) / 11.10 (Oneiric) for Drupal/Wordpress development

Setting up a LAMP (Apache, MySQL, PHP) development environment on Ubuntu 11.04 (Natty) / 11.10 (Oneiric) for Drupal/Wordpress development

Package Installation
From Terminal, execute the following command to install the required packages:

sudo apt-get install apache2 mysql-server mysql-admin mysql-query-browser mysql-client mysql-navigator php5 libapache2-mod-php5 php5-gd php5-mysql php5-cli  php5-curl kcachegrind  php5-ffmpeg php5-mcrypt php5-imagick php5-xdebug phpmyadmin

Additional Configuration

1. To fix the Fully Qualified Domain Name issue for Apache

Ubuntu 11.10 Oeneric Ocelot has been released!

Steve Jobs (1955-2011) Passes Away, leaving behind a 'ding' in the Universe

HOWTO use wget as an auto-resume no-bullshit get-it-full download manager

This should do the job:

wget --tries=0 --continue --server-response --timeout=0 --retry-connrefused <file-url>


If it requires FTP or HTTP authentication, just add the following before <file-url>:

--user='username' --password='password' 

MSI X320 Detailed Specs

Here's a detailed spec listing of the MSI X320 that I'm writing for my own references. This will be a work in progress. From the MSI Website:


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