How to recover data from a Damaged Drive or Filesystem From linuxers.org In this article I will tell you how to recover data from such media devices using ddrescue. According to the software’s man page – GNU ddrescue is a data recovery tool. It copies data from one file or block device to another to…

You might have heard a lot of people say that linux shell is very powerful. But have you ever tried to think why do they say that. What secrets do they know about it that you don’t? I bet most of you never think this way but if you want to know these so called…

How To: Upgrade CentOS Linux 5.3 to v5.4 How do I upgrade CentOS Linux from version 5.3 to latest version 5.4 over the Internet? CentOS Linux v5.4 has been released and available via mirrors for immediate update. The new version includes the kernel-based virtual machine (KVM) virtualization, next generation of developer features and tools including…

How do you force RoundCube to update or re-install via the command line? /usr/local/cpanel/bin/update-roundcube –force For Horde, the commands are; /etc/init.d/mysql stop && /etc/init.d/chkservd stop mysqld_safe –skip-grant-tables & mysql >kill %1 /etc/init.d/mysql start /etc/init.d/chkservd start /scripts/fullhordereset

Your password is a critical part of keeping your information secure. Following these tips can help you create a stronger password — one that’s more difficult to guess. 1. Complexity is key. You can make your password more complex by making it longer (at least eight characters), as well as using a mix of characters…

Google Wave Cheat Sheet If you would like to download this as a friendly PDF file for handy-dandy reference, here’s the link. Google Wave Cheat Sheet -PDF ———– Search Cheat Sheet This is a quick guide to the operators and restricts supported by wave search. Keywords about:[keyword] — finds waves which have [keyword] occurring anywhere….

How do I change the server date via ssh shell? It is pretty easy to change your server date and time via shell. 1. First, execute “date” to see the current date and time: root@myserver [~]# date Wed Aug 27 21:03:57 CDT 2008 2. Now, execute in this format to set the new date and…

Iptables is a Linux kernel-level module allowing us to perform various networking manipulations (i.e. packet filtering) to achieve better network security. Here are some iptables commands I have found useful. This list will be updated from time to time. __________________________ View all current iptables rules: iptables -L -v __________________ View all INPUT rules: iptables -L…

cc: Command not found If you try to make or install a program and you receive an error like this: make[2]: cc: Command not found Then that means you don’t have a C+ compiler installed! If you are using centOS or other yum based distro, type: yum install gcc-c++ That will install the needed RPMs…

Awesome Java based IRC Client If you are looking for a great Java based IRC client, I would suggest