clear history from shell

[MR ZenWiz]

On Mon, May 16, 2016 at 9:08 AM, Grizzly <Real_Grizz_Adams at yahoo.co.uk> wrote:
>
:
> It would be nice if there were a "Unique" switch for history so if a command
> has been used before (or maybe was executed from history itself) its not added
> to list again, just a thought

That's what the HISTCONTROL=erasedups is supposed to do.

In my experience, this doesn't always (or often) work - I get scads of
duplicate entries within in terminal window, but I have mine set to
HISTCONTROL=ignoreboth:erasedups.  I'm not sure that works too well
either.

Another option you can try is 'unset HISTFILE' in your bash script.
This explicitly prevents bash from saving any history to a file.  If
this is done at the terminal window and you subsequently exit the
terminal, all that window's history is lost.

Hope that helps.

MR