RE: how to issue a shell command from EPICS record ?

["Jemian, Pete R." <jemian@anl.gov>]

Normally, you would do this in a client, such as a python script, that monitors the scan and starts the necessary scripts.

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-------- Original message --------
From: Christian Pauly <pauly@physik.uni-wuppertal.de>
Date: 2013/10/01 5:59 PM (GMT-06:00)
To: EPICS Tech Talk <tech-talk@aps.anl.gov>
Subject: how to issue a shell command from EPICS record ?

Hi
Hope someone has a good advice for me:

I implemented an XY-scanning table control using EPICS to handle an XY
step-motor table.
I use sscan records to implement automatic scans in x and xy-direction.
So far this works fine.

Now i want to add one more thing: Before the scan starts, i have to
start the DAQ system with a certain BASH shell-script, after the scan i
have to stop the DAQ with another shell script.

Can i somehow issue these shell-commands automatically before and after
the scan ?
Is there some record type available which can do this ???

I have been quite some time now, but could not find anything.

Any advice ?

best regards,
Christian