A job signaller

A job signaller

[Paolo Pumilia]

Hi z-shell users,
Is there a way to put a mark within the prompt string to
inform the user that jobs are still running from that shell?
(e.g +/-: "+" for running or stopped jobs; "-" for no jobs)

thank you for your suggestions

Paolo Pumilia


---- cstc -

Re: A job signaller

[Zefram]

Paolo Pumilia wrote:
>Is there a way to put a mark within the prompt string to
>inform the user that jobs are still running from that shell?
>(e.g +/-: "+" for running or stopped jobs; "-" for no jobs)

I use something like this:

precmd () {
  if jobs % >& /dev/null; then
    psvar=("")
  else
    psvar=()
  fi
}
PS1="%(1v:+:-)> "

-zefram

Re: A job signaller

[Dan Nelson]

In the last episode (Oct 29), Zefram said:
> Paolo Pumilia wrote:
> >Is there a way to put a mark within the prompt string to
> >inform the user that jobs are still running from that shell?
> >(e.g +/-: "+" for running or stopped jobs; "-" for no jobs)
> 
> I use something like this:
> 
> precmd () {
>   if jobs % >& /dev/null; then
>     psvar=("")
>   else
>     psvar=()
>   fi
> }
> PS1="%(1v:+:-)> "

Note that a side-effect of this is that an "exit" will not warn you
that you have jobs running.  The "jobs" comand in the precmd() function
clears the variable that would cause the warning to be printed.

	-Dan Nelson
	dnelson@emsphone.com

Re: A job signaller

[Alain Caron]

Paolo Pumilia wrote:
> 
> Hi z-shell users,
> Is there a way to put a mark within the prompt string to
> inform the user that jobs are still running from that shell?
> (e.g +/-: "+" for running or stopped jobs; "-" for no jobs)
> 
> thank you for your suggestions
> 
> Paolo Pumilia
> 
> ---- cstc -

I use the following in my .zshrc

function precmd
{
  if jobs % >& /dev/null; then
    psvar=("*")
  else
    psvar=("")
  fi
}

PS1="%~ %!%1v> "

The precmd function is executed before printing a prompt. It checks
whether there are background jobs or not.
The %1v pattern in PS1 means to print the first element of the array
psvar.  If there background jobs, an asterisk is printed. Otherwise, an
empty string is printed.

It works fine for me.

You would just have to modify the precmd to check whether the jobs are
running or suspended and set psvar accordingly.

Regards,

Alain Caron
alainc@sangacorp.com
514-288-4498 ext. 225