Bash Help

Rodolfo Alcazar rodolfo.alcazar at padep.org.bo
Fri Apr 7 11:14:17 UTC 2006


On Fri, 2006-04-07 at 12:08 +0100, 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?

check this empty script:

[rodolfoap] /home/rodolfoap > cat command
#!/bin/bash
[rodolfoap] /home/rodolfoap > if [ "$(./command)" == "" ]; \
then echo NOTHING; else echo SOMETHING; fi
NOTHING

Now we add some text to output:

[rodolfoap] /home/rodolfoap > echo echo hello>>command
[rodolfoap] /home/rodolfoap > if [ "$(./command)" == "" ]; \
then echo NOTHING; else echo SOMETHING; fi
SOMETHING
[rodolfoap] /home/rodolfoap >

Good luck!
--
Rodolfo Alcazar - rodolfo.alcazar at padep.org.bo
Netzmanager Padep, GTZ
591-70656800, -22417628, LA PAZ, BOLIVIA
http://otbits.blogspot.com
--
New systems generate new problems.





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