Experimental Physics and
Industrial Control System

You’re trying this on linux? 

I just tried:

makeBaseApp.pl -t example example

makeBaseApp.pl -t example -i example

make

cd iocBoot/iocexample/

../../bin/linux-x86_64/example st.cmd

export IOCSH_PS1=“FOO

BAR> "

../../bin/linux-x86_64/example st.cmd

and got

. . .

## Start any sequence programs

#seq sncExample, "user=enorumHost"

FOO

BAR> 

I didn’t type anything fancy on the export line — just a <return>.

I then added this line to the startup script:

epicsEnvSet IOCSH_PS1 "$(PROMPT)"

and

export PROMPT="ONE LINER> "

../../bin/linux-x86_64/example st.cmd

. . .

## Start any sequence programs

#seq sncExample, "user=enorumHost"

ONE LINER> 

export PROMPT="TWO

> LINER> "

../../bin/linux-x86_64/example st.cmd

. . .

## Start any sequence programs

#seq sncExample, "user=enorumHost"

TWO

LINER> 

The fact that you get a complaint about PROMPT being undefined makes me think that there’s something weird with your linux shell — that it’s not actually passing on the environment properly.

On Feb 27, 2014, at 8:03 AM, Mark Davis <[email protected]> wrote:

Don't know why it doesn't work for for me.

I tried this first just using the name IOCSH_PS1 for my bash environment variable, which didn't work.

Figuring that the IOCSH_PS1 value might get some special treatment, or that something in the scripts we use to lauch the IOC shell are doing something of their own, I tried this:

___________________________________________
In my bash shell, before launching the IOC shell:

davis-pc:/home/epics/R3.14.12.2/apps/mdlinux/iocBoot/iocFrib> export PROMPT=$'\nmdlinux> '

  OR

davis-pc:/home/epics/R3.14.12.2/apps/mdlinux/iocBoot/iocFrib> export PROMPT="    <--- typed Ctl+V, Ctl+J
mdlinux> "

___________________________________________
Both of which produce the same effect: 

davis-pc:/home/epics/R3.14.12.2/apps/mdlinux/iocBoot/iocFrib> env

...
PROMPT=
mdlinux>
...

   OR

davis-pc:/home/epics/R3.14.12.2/apps/mdlinux/iocBoot/iocFrib> set | grep PROMPT
PROMPT=$'\nmdlinux> '

___________________________________________
In the st.cmd file:

epicsEnvSet("IOCSH_PS1", "$(PROMPT)")

   which produces the error:

macLib: macro PROMPT is undefined (expanding string epicsEnvSet("IOCSH_PS1", "$(PROMPT)"))

  and I also tried:

epicsEnvSet IOCSH_PS1 $(PROMPT)

    which produces the error:

macLib: macro PROMPT is undefined (expanding string epicsEnvSet IOCSH_PS1 $(PROMPT))
___________________________________________

Is there something special you have to do to get a particular bash environment variable to show up in the EPICS IOC shell?  If not, what determines which ones show up and which ones don't?

Mark Davis

-- 
Eric Norum
[email protected]