Experimental Physics and
Industrial Control System

"Rarback, Harvey" <[email protected]> · Wed, 29 Jan 2003 14:28:52 -0800

	Kevin,

> -----Original Message-----
> From: Kevin M. Peterson [mailto:[email protected]]
> Sent: Wednesday, January 29, 2003 2:16 PM
> To: tech-talk
> Subject: Running iocsh in the background
> 

> I have a Linux IOC and I am using the main function from
> R3.14.1's example App.  After the IOC is initialized iocsh
> left in "interactive mode" just like the App. Dev. Guide
> describes.
> 
> Unfortunately, "shutting down" the Linux IOC dangerously
> easy.  It isn't necessary to type the "exit" command; Closing
> the terminal window or pressing Ctrl-C do the job with even
> less effort.
> 
> Is it possible to start the Linux IOC and have it run in the
> background?  The Linux IOC seems to be missing the
> "non-interacting mode" that all of the vxWorks IOCs have.

When I had this requirement, my colleague Till Straumann suggested this workaround:

  - run the startup script in the background, something like

#!/bin/tcsh
# set up "virtual IOC" to run in the background
set soft_ioc=~rarback/soft_ioc
set arch=solaris-sparc-gnu
$soft_ioc/bin/$arch/example < $soft_ioc/exampleApp/src/st.cmd >& /dev/null &

  - include as the last line of the startup script

epicsThreadSleep 1000000

                                   --Harvey

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System