How do I clear my Bash history in OS X?
To clear it, just delete the ~/.bash_history file. If you want to just remove the offending lines you can open ~/.bash_history in the editor of your choice. For me, this would be

emacs ~/.bash_history


and then going to the beginning of each bad line and pressing control ^+K.

Or your can just fill your .bash_history with empty.
Run this: (including the &gt;)

 &gt; ~/.bash_history