execute command in CURRENT shell

[Grant Edwards]

In article <ec6d1a16.0308080828.367f6b54 at posting.google.com>, Valentine Kouznetsov wrote:

> simple question, how to execute command in current shell, not
> in subshell?

Can't be done.

> Example. I have environment variable A=aaa and need to invoke
> shell (sh) script which will do something with A. If I do
> os.system() then sub-shell will setup A and execute my script
> there leaving A in parent shell untouched.

Under Unix, you can't affect the environment of a parent.  You
can only write to your own environment and pass it on to your
children.

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