Alien is a computer program that converts between different Linuxpackage distribution file formats. It supports conversion between Linux Standard Base, RPM, deb, Stampede (.slp) and Slackware (tgz) packages. A computer program (often simply called a program) is an example of computer software that prescribes the actions (computations) that are to be carried out by a computer. ... Tux, a lovable and cuddly penguin sitting down after having gorged itself on herring, is the official Linux mascot. ... A software package is a special method for the distribution and installation of software on computer systems. ... A file format is a particular way to encode information for storage in a computer file. ... The Linux Standard Base, acronym form LSB, is a joint project by several Linux distributions under the organizational structure of The Free Standards Group to lay out and standardize the internal structure of Linux-based operating systems. ... RPM Package Manager (or RPM, originally called Red Hat Package Manager) is a package management system primarily intended for Linux. ... deb is the extension of the Debian software package format and the most often used name for such binary packages. ... A stampede is an act of mass impulse among herd animals or a crowd of people in which the herd (or crowd) collectively begins running with no clear direction or purpose. ... Slackware is a Linux distribution. ... In computing, the tar file format is a type of archive file format: the Tape ARchive format. ...