Re: continuously evaluated prompts/environmental variables

[Chris F.A. Johnson]

On Mon, 25 Nov 2013, Edward Peschko wrote:

> All,
>
> I was wondering if there was a way to make an environmental variable
> be evaluated each time it was accessed. In other words, with:
>
> export PS1="`whoami`@`hostname`"
>
> This works for the first time that the prompt is evaluated, what I
> would like to have is a prompt to be continuously evaluated, so that
> if whoami or hostname changes, the prompt changes along with it.
>
> Is there a way to have the prompt - or any other environmental
> variable - change in this way, based off external command?

  Use single quotes:

PS1='`whoami`@`hostname`'

--
Chris F.A. Johnson, <http://cfajohnson.com>