Screen is a full-screen window manager that multiplexes a physical terminal between several processes, typically interactive shells.Using GNU screen all windows run their programs completely independent of each other. Programs continue to run when their window is currently not visible and even when the whole screen session is detached …

defoster : debfoster is a wrapper program for apt and dpkg. When first run, it will ask you which of the installed packages you want to keep installed.After that, it maintains a list of packages that you want to have installed on your system. It uses this list to …

To play dvd’s on Ubuntu first you need install  VLC media player.
for that do below steps
1)
$ Sudo apt-get update
$ Sudo apt-get install vlc vlc-plugin-esd mozilla-plugin-vlc
2)
1.insert DVD into media
2. Application “Sound & Video> VLC media player launch
3.VLC media player “media” open disc “to play

Sage is a free open-source  mathematics software.Sage can be used to study general and advanced, pure and applied mathematics. This includes a huge range of mathematics, including algebra, calculus, elementary to very advanced number theory, cryptography, numerical computation, commutative algebra, group theory, combinatorics, graph theory, exact linear algebra and much …

Here are some very useful plugins as extensions for Yum:
* Fastestmirror, this plugin works to sort mirror of the repository based on connection speed so that yum is expected to be faster in the download package.
* Priorities, this plugin works for the repository to determine the priority of other repositories …

Wireshark : Interactively dump and analyze network traffic
Description : Wireshark is a free packet analyzer computer application. It is used for network troubleshooting, analysis, software and communications protocol development, and education.
Command :  wireshark
Command to install on ubunut :
$sudo apt-get install wireshark

Adobe has released Flash Player 10 Alpha build 10.0.32.18 code named “Astro” for Linux 64-bit. The 64-bit Flash Player 10 alpha is available in all supported languages; however, the alpha installers are only in English. Flash Player 10 is only available for download as Linux Plugin.

click here to download plugin
Unzip …

Playing .3gp and .mp4 on linux
In ubuntu you need to install below package
$sudo apt-get install gnome-mplayer
for others distros go through below link
click here for more info

net2ftp is a web-based FTP client written in PHP.Web-based means that net2ftp runs on a web server, and that you use a browser (for example Internet Explorer or Mozilla). FTP is the communication method to access files on a remote computer. You need it to access your files on the …

First you need to download ffmpeg-php-x.x.x.x.tbz2
click here to download
now you need to extract that file using  below command
$ tar -xjf  ffmpeg-php-x.x.x.x.tbz2
phpize command is used to prepare the build environment for a PHP extension
$phpize
now configure using below command
$./configure
$make
$make install