[Condor-users] do I have to use custom classad functions?

[<gregg.cooke@xxxxxxx>]

I've been playing around with job submission policies in my submit files and I have a few scenarios that I can't see a way around except by using custom classad functions:

- I'd like to submit a job that will only go to those machines that are also running some other application...for instance, a daemon whose service my task would use.  The idea is to make a "service-sensitive" policy.  I suppose I could do this by writing a classad function but I don't have access to the source code (yet).

- I'd like to submit a job that will only go to machines that have a certain shared filesystem mounted.  Again, a classad function might work...but I don't think I can do that (...can I?  or do I really need the source code to add my own functions?)

Both of these could be done if I had the ability to run a shell command and assign the output to an attribute in my machine classad.  Is there a way to do this without getting the source code and writing a new classad function?  Or has someone written a classad function that I can use to do this?  Are there libraries of contributed functions out there that I might tap into?

	-Gregg

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