Re: How to determine if program is running in QSHELL

On 24/09/2009, at 9:09 PM, Dennis Lovelady wrote:

Do you know the value of $SHELL when the program is called from command line
vs. from QSH? Will that give you a clue?

My first thought was to look for an environment variable or similar. QSH doesn't set the SHELL variable so that's out.

There is a QSH_VERSION variable but that appears to be a shell variable rather than an environment variable. I don't want to require use of a shell script to launch this from QSH. It's just a program that needs no special pre-processing (i.e., like an HLL that doesn't require a CL to set overrides).

There is a TERMINAL_TYPE=5250 environment variable set by QSH but because it's an env-var it could be added outside QSH (as you point out below) so that's not suitable (fails the absolutely/positively requirement).

One thing to consider: your link doesn't HAVE to be symbolic to the program
object, does it? Couldn't it be a script that sets up overriding parameters
(perhaps simply by setting some environment variable) and then links to the
program object (perhaps with a special command-line switch)? Does that
help? Of course the issue there is that environment variables can also be
set from the ADD/CHG/RMV ENVVAR command set and flags can be passed from
CALL, which violates the absolutely/positively aspect of your question. But
maybe (if $SHELL is a clue) the combination can be absolute? Hmmm...

It doesn't HAVE to be a symbolic link but since there is no reason for using a script (other than your suggestion to set a special env-var) then I don't consider that an acceptable solution--more a work-around.


Regards,
Simon Coulter.
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