LOIC performs a denial-of-service (DoS) attack (or when used by multiple individuals, a DDoS attack) on a target site by flooding the server with TCP packets or UDP packets with the intention of disrupting the service of a particular host. People have used LOIC to join voluntary botnets.
1 - aptitude install git-core monodevelop
2 - Download loic.sh script wget https://raw.github.com/nicolargo/loicinstaller/master/loic.sh
3 - Make Folder - mkdir <folder name>
4 - install - ./loic.sh install
5 - update - ./loic.sh update
6 - Run loic - ./loic.sh run