[ILUG] return codes

[Aaron McDaid]

i don't know if this has already been solved but!:
PS1='$?'
as opposed to PS1=$?
you can do all sorts of cool stuff in the PS1 including backticks - so you
could have it execute an arbitrary command each time and use the output as
the prompt, but you would have to do PS1='`command`'

the important thing is to check the environment variable (using the "set"
built in command)

the outer pair of ticks are to make sure that the inner pair actually get
put into the environment variable

Nice idea, must use if myself. I spent sometime on saturday putting
different colours into different parts of my PS1 !



-----Original Message-----
From: John P. Looney [mailto:jplooney-ilug at online.ie]
Sent: Tuesday, March 07, 2000 10:19 AM
To: ilug at linux.ie
Subject: Re: [ILUG] return codes


On Tue, Mar 07, 2000 at 10:07:41AM +0000, Con Hennessy mentioned:
> "John P. Looney" wrote:
> >  Can bash print out the return code of the last command ?
> >  (handy for my $PS1)
> Try $? 

 Had that, actually, though bash doesn't evaluate variables ever time.
That's why it wasn't working. D'oh.

Kate

-- 
"The fool must be beaten with a stick, for an intelligent person 
the merest hint is sufficient"                -- Zen Master Greg

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