How to clear bash history compeletly?

http://askubuntu.com/questions/191999/how-to-clear-bash-history-compeletly

~/.bash_history holds the history.

To clear the bash history completely on the server. You can open terminal and type cat /dev/null > ~/.bash_history

Other alternative way is to link ~/.bash_history to /dev/null

ln -sf /dev/null ~/.bash_history