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Re: Bash Help



On 4/7/06, Paul Howarth <paul city-fan org> wrote:
> Dan Track wrote:
> > Hi
> >
> > Simple question, I'm running a command `command`, what I'd like to do
> > is check to see if the response is empty then exit. Does anyone know
> > how I can perform that check?
>
> Exit if "command" produces no output:
> [ -z "$(command)" ] && exit
>

Hi

When I do 'man bash' I can't find any instance of -z, any ideas where
it came from?

Dan


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