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Ubuntu Uninstall deb Package

How do I uninstall deb packages under Ubuntu Linux using GUI or CLI (command line) methods?
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MySQL: Find Out Which Table is Consuming Resources

Q. How do I find out which table is consuming resources under MySQL Database server from UNIX shell prompt?
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How To Open .TBZ ( tar.bz2 ) File Under Linux / UNIX

Q. I've download ed .tbz file. How do I open .tbz file under Linux / UNIX operating system using a shell prompt or GUI application?
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Ubuntu Linux: Upgrade Linux Kernel

Q. How do I upgrade my Linux kernel version under Ubuntu Linux 7.04 / 7.10?

A. You can use any one of the following method:
(a) Command Line Tools - apt-get

(b) GUI tool

apt-get command - Upgrade Linux Kernel

Open terminal and type the following commands:
$ sudo apt-get update
Now search kernel version:
$ apt-cache search kernel-image
Now install kernel by explicitly specifying version number:
$ sudo apt-get install linux-image-2.6.xx-yy-generic
Replace xx.yy with kernel version number. Reboot the system.

GUI tools

This is recommended method for most user. Click on System > Administration > Update Manager > Click on Check button > Apply all updates including kernel.

Howto: Update firefox on Linux

Q. My Firefox version is and I'd like to update the same to latest version. How do I upgrade my Firefox on Linux?

A. You can easily upgrade firefox on Linux.

Please note that installing Firefox 2 will overwrite your existing installation of Firefox. You won't lose any of your bookmarks or browsing history, but some of your extensions and other add-ons might not work until updates for them are made available.

Update Firefox on Ubuntu / Debian Linux

You can use APT package handling utility i.e. apt-get command. You can also use a GUI package tool called Update Manager:
Just type the following two commands at terminal:
$ sudo apt-get update
$ sudo apt-get install firefox

You can also use GUI tool: Click on System > Administration > Update Manger > Click on Check button see for updates

Update Firefox on Fedora / Redhat / CentOS Linux

Use yum tool or gui tool for the same purpose:
# yum update
# yum update firefox

Update firefox from official Mozilla site

You can download firefox from official website. Just follow these firefox installation instructions.

HowTo Red Hat Enterprise Linux 5 Configure The Network Card

I have installed Red Hat enterprise Linux version 5.x server. Next, I added a brand new LAN card (NIC). I can see my second network card detected while booting the IBM server. How do I configure the network card from the command line?
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Fedora core Linux sound card configuration

Q. How do I configure Fedora Linux sound card using GUI and command line tools?

A. You can use GUI tool called redhat-config-soundcard to configure sound under Fedora or Red Hat enterprise Linux or Cent OS etc.

Just type the following command:
redhat-config-soundcard &

If you didn't hear any sound use aumix to setup sound volume:
aumix &

Or try GUI tool:
gnome-volume-control &