Adding GPG key in Ubuntu

Filed under Desktop, howto, Linux, Software, System, Tips, Ubuntu by on March 1, 2011 at 11:47 am {no comments}

Today while updating / installing packages in Ubuntu I got GPG error. Error was,

W: GPG error: http://packages.medibuntu.org maverick Release: The following signatures couldn’t be verified because the public key is not available: NO_PUBKEY 2EBC26B60C5A2783

So it was asking me to add GPG key for the repository http://packages.medibuntu.org maverick Release.
To solve this, you need to run following commands:

gpg --keyserver keyserver.ubuntu.com --recv-key 2EBC26B60C5A2783

We got 2EBC26B60C5A2783 from the error.

Now run,

gpg -a --export 2EBC26B60C5A2783 | sudo apt-key add -

This will add gpg key, and then run apt-get update to update your package list.

Install Firefox 4 Beta on Ubuntu

Filed under Desktop, howto, Linux, Software, System, Ubuntu by on January 17, 2011 at 7:48 pm {no comments}


Mozilla has announced the latest beta version of their firefox browser, Firefox 4.

To install Firefox 4 beta on the Ubuntu run following commands

sudo add-apt-repository ppa:ubuntu-mozilla-daily/ppa
sudo apt-get update
sudo apt-get install firefox-4.0

How to run
Enter below command on terminal Or you can create a launcher for same.

firefox-4.0

Firefox 4 Beta Released

Filed under Desktop, Linux, Microsoft Windows, Software, System by on January 17, 2011 at 5:58 pm {no comments}

Mozilla has announced the latest beta version of their firefox browser, Firefox 4.

The new Firefox 4 Beta includes an updated sleeker and easier to use interface. Also tabs are given top visual priority for more efficient and intuitive browsing.
Firefox 4 Beta contains huge performance enhancements, including our brand new JagerMonkey JavaScript engine. From faster start up times and graphics rendering to improved page load speed, you’ll notice the difference instantly.


Image courtesy Mozilla.com

You can download Firefox 4 beta version from here

Once you install the Firefox 4 Beta, you will notice the Feedback Add-on in the upper right corner. You can use this to provide instant feedback at any time.

Emptying Trash from Shell

Filed under Basic, Desktop, Fedora, howto, Linux, System, Tips, Ubuntu by on December 29, 2010 at 9:30 pm {no comments}

Ever want to empty your Trash folder from command prompt. Then you can run following commands to do the trick

rm -rf /home/username/.local/share/Trash/info/* 
rm -rf /home/username/.local/share/Trash/files/*

Above you just need to provide username of whom you need to empty Trash file. I have tested it on Fedora and on Ubuntu with gnome.

Remotely Turn Off Monitor

Filed under CentOS, Desktop, Fedora, Hardware, howto, Linux, Network, Server, Software, System, Ubuntu by on December 16, 2010 at 11:53 am {2 comments}

Most of the time I forgot to turnoff my linux server monitor and for the same I want to find out what is the way to turn off linux server monitor remotely. To do so,
First ssh login to the server remotely

ssh vidyadhar@vidyadhar-server-ip

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