Here I would like to share the steps of cracking linux password using John the Ripper.This information gained during my IT
Training in 2004.The training was actually on windows 2003 server, however, our trainer was keen enough to the additional knowledge of him
1. Download John-1.6.rpm or the latest version of it
2. install the package at the linux box
rpm -ivh John-1.6.rpm
3. cd /usr/local/bin/mypassword