Real-time command history sharing between interactive shells

[Andrew Pantyukhin]

On 11/30/06, Jan Grant <jan.grant at bristol.ac.uk> wrote:
> On Wed, 29 Nov 2006, Andrew Pantyukhin wrote:
>
> > I want to be able to define groups of interactive
> > shells (preferably even across different users)
> > so they have one single shared command history.
> > Any command executed in one of them should be
> > available through all history mechanisms in the
> > other ones.
> >
> > I imagine some ways to do it in tcsh. I'm sure
> > many users would like this kind of functionality,
> > maybe some of them have already implemented it?
>
> zsh is a pretty good interactive shell (it finally weaned me off tcsh),
> as well as supporting a full range of redirection and control
> constructs. You should look at that, in particular the
>         set -o sharehistory
> option (which does half of what you're after).
>
> Combine this with a shared .history file and you should get the effect
> you're after.

I think, I'll follow your advice. It's high time I forgot about
csh, but I wonder if you tried to change root's shell to zsh?