SHUFFLEOS

Ubatar is an application that allows its users to customize their avatar images or profile pictures for their Twitter , Launchpad , Gravatar and Ubuntu system’s accounts and automatically upload them to all of those accounts.

Currently, Ubatar supports Twitter , Launchpad , Gravatar web services only. In further development, it is expected to add support for other web services too.
With Ubatar, you can add ribbons such as the logos of Ubuntu , Android , etc to the avatar images and customize them. You can automatically upload the customized avatar images to supported web services at once and even download them from those supported web services.
You can install Ubatar in Ubuntu 12.04 via its official ppa by running the following commands in the terminal.
sudo add-apt-repository ppa:ubatar/ppa
sudo apt-get update
sudo apt-get install ubatar
Once installed, you have to authorize your accounts for Twitter, Launchpad and Gravatar web services with Ubatar. Your Ubuntu system account is already authorized once it is installed.

Then, you can keep your Twitter , Launchpad , Gravatar and Ubuntu system’s Avatars in sync using Ubatar. Once the synchronization is complete , you get notification in the form of bubble message as shown below.

If you have created your own customized images to add as ribbon to the avatar images , you can copy and paste them to ~/.local/share/ubatar/ribbons/. Then, they will be made available for use as ribbons in Ubatar.

EnkoDeur-Mixer (EKD) is an opensource tool to make the pictures , audios and videos post-production. It is cross platform and available for Ubuntu , Linux, MacOSX and Windows. It has been written in python using PyQt4 bindings.
EKD is an easy to use tool to batch process pictures, audios and videos files for post production. You can use EKD to transcode various video formats such as AVI Raw i420 , DV, Ogg Theora (.Ogg) ,3GP, WMV2, AMV and many more. You can also transcode videos for the web, encode HD (High Definition), add filters, simple video editing, separate audio track from the video , convert video into the batch of images, create slidehshow , tag videos and so on.

With EKD, you can edit images, resize them, convert them into other formats, create animated gifs from the images, batch rename images, view and save data in .txt files in one or more images , add filters to the images , multiply images , insert transitions in the image sequences and so on.

In the case of audio files, you can use EKD to transcode audio files to and from audio files such as WAV, MP3, MP2, OGG, FLAC, WMA , M4A , AC3 and AAC. You can cut these audio files and even join them using KED. You can also normalize and convert an audio file.

You can download DEB package of EKD for Ubuntu from the download link given at the end of the post. Then, you can install it using Ubuntu Software Center. You can also download its packages for Debian, Fedora, Mandriva and openSUSE from the same download link.

pushd and popd are the commands to push and pop directories from the directory stack. Using pushd , you can quickly cd into the new directories while using Ubuntu terminal saving the current directory in the memory to return at any time in future. Using popd, you can quickly return into the previously visited directories.

To quickly cd into the new directory using pushd, you have to run pushd command in the following format in the Ubuntu terminal.
Now, to quickly return back to the previously visited directory , just run the popd command in the terminal.

In this way, you can quickly switch between the directories in Ubuntu terminal using pusd and popd.