Setting environment from inside a pg.

[Jay Windley]

Assuming pg means "program" here's an answer:

In UNIX the environment is changed with the putenv(3) function.  You pass
it a pointer to a string of the format <var>=<value> (e.g., "HOME=/usrc/foo").
The caveat here is that the string must be stored in static memory; either
a global or a static character array.

Note that this only changes the environment of the current process, not
its parent.  There is no way under UNIX for a process to change the
environment of its parent, since the environment it receives upon
invocation is merely a copy of its parent's.  Children of the process
will receive the altered evironment if they are spawned after the change.
--
Jay Windley - CIS Dept. - Kansas State University
NET: jwindley at matt.ksu.ksu.edu  VOICE: (913) 532-5968  FAX: (913) 532-6722
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