Bash Help
Stuart Sears
stuart at sjsears.com
Fri Apr 7 11:37:41 UTC 2006
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Dan Track wrote:
> On 4/7/06, Paul Howarth <paul at 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
>>
>> Paul.
>
> Hi
>
> Incidentally. What do you have $() instead of just ().
$(command) == `command`
otherwise you would be testing the length of the literal string '(command)'
this way we are running command and testing the length of its output.
Regards
Stuart
- --
Stuart Sears RHCA RHCX
To err is human, to forgive is Not Company Policy.
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