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Subject: Re: Periodically calling shell functions in an IOC
From: Ralph Lange via Tech-talk <tech-talk at aps.anl.gov>
To: EPICS Tech Talk <tech-talk at aps.anl.gov>
Date: Thu, 14 Oct 2021 10:55:24 +0200
On Wed, 13 Oct 2021 at 22:45, Wang, Andrew via Tech-talk <tech-talk at aps.anl.gov> wrote:

I have a question regarding the use of shell functions with in the IOC shell. There is a shell function from StreamDevice called streamReload that I am interested in using periodically like every 30 seconds. What is the preferred method, if there are any, for doing so? Also, is there a potential way for calling that shell function within the SNL sequencer?


This is unusual as operating mode. The reload function is intended for development / rapid prototyping (testing a protocol change without rebooting the IOC).
So - please be careful with respect to possible side effects: What happens if the protocol file gets corrupted, a typo is being introduced, the disk (or nfs) is down etc. How do you detect such a situation? How do you fix it?
Needs testing.

Cheers,
~Ralph


Replies:
Re: Periodically calling shell functions in an IOC Hu, Yong via Tech-talk
References:
Periodically calling shell functions in an IOC Wang, Andrew via Tech-talk

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