Is there a way to test condor_chirp from my shell ?
You can submit an interactive job (or a normal sleep job and use condor_ssh_to_job) to get a shell in which you can expect condor_chirp to work.
If not.. can you tell me what's the correct syntax to set Chirp_myThing attribute to be "some,or,something,else" ?
IIRC, chirp expects ClassAd strings, not ubmit file strings; try condor_chirp set_job_attr_delayed Chirp_myThing '"string,with,comma"'to see if that will turn into a string. (Note that "a,b" will otherwise be an invalid expression, and "a.b" will be valid but most likely undefined.)
-- ToddM