Greyhound-Ubuntu is an open source operating system based on Ubuntu, Kali Linux and BackTrack Linux distributions. It is designed for penetration testing tasks and uses Linux kernel 3.5.0-23, modified to make some of the included utilities to work.
Distributed as a dual-arch Live DVD
The system can be downloaded from Softpedia or its official homepage (see link above) as a single, dual-arch Live DVD ISO image of approximately 4GB in size, designed to support both 64-bit (x86_64) and 32-bit (i386) instruction set architectures. Keep in mind that you must first deploy the ISO image to either a USB stick or a DVD disc in order to boot it from the BIOS of a PC.
Being based on Ubuntu, the operating system features a standard boot menu that allows the user to boot the live environment with default drivers or in safe graphics mode, directly start the graphical installer, run a system memory diagnostic test, as well as to boot an existing OS from the first disk drive.
Powered by two of the best desktop environments
Before you can use the distribution, it is a must to login using the “greyhound” or “root” usernames and the “toor” password (without quotes, of course). There are two desktop environments included in this OS, GNOME Classic (the default one) and Unity2D, which can be selected from the login screen.
A great selection of penetration testing utilities
All the penetration testing tools are borrowed from Kali Linux and organized into categories in the main menu. In addition, it features a Bangla avro-keyboard, Cobalt Strike with cortana scripts, Nessus, Netools.sh, the latest SE toolkit, a launch and migrate module, and an auto exploit module.
In conclusion, Greyhound-Ubuntu is a user-friendly operating system that includes around 300 tools for all-round penetration testing tasks and two desktop environments, Unity2D and GNOME Classic.