how to install beef on debian 8 or ubuntu 16

BeEF is short for The Browser Exploitation Framework. It is a penetration testing tool that focuses on the web browser.

Amid growing concerns about web-borne attacks against clients, including mobile clients, BeEF allows the professional penetration tester to assess the actual security posture of a target environment by using client-side attack vectors. Unlike other security frameworks, BeEF looks past the hardened network perimeter and client system, and examines exploitability within the context of the one open door: the web browser. BeEF will hook one or more web browsers and use them as beachheads for launching directed command modules and further attacks against the system from within the browser context.

Installation

sudo apt-get update
sudo apt-get install curl git
curl -sSL https://raw.githubusercontent.com/wayneeseguin/rvm/master/binscripts/rvm-installer | bash -s stable
source ~/.rvm/scripts/rvm
rvm install 2.1.5
rvm use 2.1.5 -- default
gem install bundler

Download BeEF

cd
git clone git://github.com/beefproject/beef.git

Install gems and launch

cd beef
bundle install
ruby beef

Update/Upgrade

cd beef
git pull origin master
bundle install
./update-beef