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Re: Defining a Class based on ShellCommand Output or No Output


From: Ed Brown
Subject: Re: Defining a Class based on ShellCommand Output or No Output
Date: Fri, 05 Aug 2005 12:41:16 -0600

On Fri, 2005-08-05 at 11:45, Brian E. Seppanen wrote:

> If I run that on the command line it doesn't work, 

I hope you meant to say it DOES work from the commandline, else why
would you expect it to work in a script, unless I misunderstand you. 
But doing a 'netstat -an' and grepping for 898 could be matching other
places, that's why I used '-ln' in my suggestion, which, on linux
anyway, only shows 'LISTEN'ing ports, not every connection and open
socket under the sun.  Also, I would try it without the qualifying
"any::". 

Try without the '-q' if you want to actually see what's being matched.

-Ed

> To track my logic I have the following
> classes:
>          any::
>          smcstop      = ( ReturnsZero(/usr/xpg4/bin/sh -c "/usr/bin/netstat 
> -an | /usr/xpg4/bin/grep -q 898") )
> 
> then
> shellcommands:
>        smcstop::
>                  "/etc/init.d/init.wbem stop"
> 
> 
> 
> So grep will return 0 if port 898 is open, which means that smc is running 
> and that it needs to be stopped.
> 
> If smc isn't running it will return 1, and the class should not be 
> defined.
> 
> 
> Anyone have any ideas.
> Thanks,
> 
> 
> Brian Seppanen
> 608.826.1464
> 
> 
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