clear history from shell

[Tom H]

On Mon, May 16, 2016 at 6:08 PM, Grizzly <Real_Grizz_Adams at yahoo.co.uk> wrote:
> Monday, May 16, 2016  at 16:29, Tom H wrote:
> Re: clear history from shell (at least in part)
>>On Mon, May 16, 2016 at 3:57 PM, Karl Auer <kauer at biplane.com.au> wrote:
>
>>Is "history -w" necessary?
>
> From my (albeit) limited experience, yes, history -c clears the current
> history, but once you start a new terminal session its back like a bad penny,
> of all the many ways I found (via google) to clear the history this works the
> best (and is easy to remember)
>
> 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

I've just tested it (I should've done so earlier!).

"history -c" clears the current session's history not what's already
in .bash_history. Thanks.