Changing parent process environment.....

["Bill Waters" <wwwaters prismnet com>]

Is it possible by any means (shell script, perl, c) possibly using system
calls
to make changes to a parent process environment......I know it can be done
from the command line (in other words, not starting a child process). It
seems
 to be a reasonable expectation.....I'd like to write a script or a program
(my own
command...not an alias) to modify the environment variables as needed for a
given situation....any ideas or obvious oversights????

Bill Waters wwwaters prismnet com