How to disable command prompt history?

[VeeJay]

Thank you guys,

Actually, it was for the security reason that if somebody breaks in the
server then he/she doesn't see what commands are being executed, etc,
etc....

and I am using /bin/sh

any more comments?

thanks,
VJ


On 6/2/07, Kevin Hunter <hunteke at earlham.edu> wrote:
>
> At 1:56p -0400 on 02 Jun 2007, sac wrote:
> > On 6/2/07, Christopher Hilton <chris at vindaloo.com> wrote:
> >> VeeJay wrote:
> >>> Could someone would like to describe that how we can disable to show
> >>> last executed commands by pressing Up Arrow?
> >>>
> >>
> >> That would depend on which shell you are running. Can you run the
> >> following command and post the results here?
> >>
> >>      echo $SHELL
> >
> > By default most of the shells like bash, zsh, ksh have history option.
> > But you can avoid writing the history of the current session to the
> > history file by unsetting the HISTFILE environment variable.
> > So next time when you login the history of the previous session will
> > not be shown.
>
> I'd be curious as to the underlying "why?".  Having a history of what
> you've done is generally a Good Thing.  The only reason that I
> personally have ever come across to necessitate not storing my actions
> is when I'm playing a prank on one of my friends.  Other than that,
> having the ability to go see what commands I was executing three years
> ago comes in awful handy.  I /could/ recreate that arcane command
> sequence for that one-off job I needed 1,237 days ago, or I could do a
>
> history | grep 'substring I remember in command' | less
>
> And, if you're worried about the space it takes to store the history,
> don't.  It's extremely negligible.
>
> Kevin
>



-- 
Thanks!

BR / vj