Re: SQR or SQL*PLUS and enviroment variables + UNIX

p0070621_at_brookes.ac.uk (Tommy Wareing) writes:

>In article <4083dm$ji5_at_bigboote.WPI.EDU>, KJ says...
>>
>> Does anyone know how in a Unix enviorment how I can change an
>>envoirment variable that existed when it was caled. I know that getenv()
>>can be used to read them , but how about changing them?
 

>man getenv
>...
> SEE ALSO
> exec(2), putenv(3C), environ(5)
> ^^^^^^^^^^
>But of course, you can't pass them back up to a parent process.
Unless you are using sh/ksh

        FRED=`process_that_echoes_new_value`
OR

	do some sniffy reading by parent/writing by child along
	a named pipe, or some other IPC mechanism and then get
	the parent to write to ITS environment.  If you are
	coding in C, this is not too difficult.

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