Install Metasploit on Ubuntu

# Before installing Metasploit, we need to install the following packages.
sudo apt-get install ruby libruby rdoc libyaml-ruby libzlib-ruby libopenssl-ruby libdl-ruby libreadline-ruby libiconv-ruby rubygems
# Download the lastest version of Metasploit.
http://www.metasploit.com/framework/download/
# Extract the archive and change to Metasploit folder.
tar xvf metasploit-x.x.tar.bz2
cd metasploit-x.x
# Update Metasploit...
svn update
# If you don't have subversion installed use the following command.
sudo apt-get install subversion