Experimental Physics and
Industrial Control System

"Heesterman, Peter J" <[email protected]> · Fri, 6 Dec 2013 19:25:54 -0000

Hi John,

I am able to reproduce anomalous behaviour, using SoftIoc, on my Windows PC by:
epics>1>help.txt
epics>help

help.txt is created, but empty.
To the screen, I get:
 ": Invalid argument

Cheers,

Peter.

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of John Dobbins
Sent: 06 December 2013 17:24
To: EPICS Tech-Talk
Subject: iocsh and redirection

All,

I was experimenting with redirection in the iocsh and the results were not as I expected.

I have used commands like

dbl>records.txt

in the past and they work fine.

So I created an example IOC (makeBaseApp.pl -t example) and tried:

epics> 1>test.txt
epics> dbl

and got:

Can't open "": No such file or directory.

the file test.txt was created but was empty.

Running the same test on another computer might produce

epics> 1>test.txt
epics> dbl
Can't open "ØîØð8": No such file or directory.

again test.txt is created but empty.

And interestingly on a third computer

epics> 1>test.txt
epics> dbl

will create test.txt but will output a list of records to a file named "èþ8Þ"

BTW, I was playing with this because I wanted to redirect stderr to a 
file. The App Developer Guide mentions epicsStdioRedirect and I was 
wondering what it would take to get redirection to work in any specific IOC.

Regards and thanks,

John Dobbins
Cornell University

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System