I have been interested in this also.  Found this site : 
http://www.cyberciti.biz/tips/howto-linux-unix-bash-shell-setup-prompt.html

On 2015-01-02 19:17, joe@actionline.com wrote:
> I recently purchased a new Dell laptop, delete M$,
> installed Linux Mint, and I'm in the process of
> setting it up the way I want it.
> 
> How can I change the command line prompt from the current:
> 
> "joe@joe-dell-Inspiron-3542:>"
> 
> to just: "joe:>"
> 
> Also, I'd like to be able to turn the touchpad off and on
> but the only suggested method I have found to do this
> does not work for me:  synclient TouchpadOff=1
> 
> 
> 
> 
> 
> 
> 
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-- 
Keith Smith
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