shell script question

["Han Huynh" <han_huynh@hotmail.com>]

I know this isn't a bash/korn shell script news group, but the fact is I 
can't find one.  Since bash/ksh is the default linux shell, I was hoping  
someone could answer a few pretty simple questions.

Is there any way to export a variable for one parent shell to a different 
parent shell?  I know that export will work to a subshell, but I can't find 
any process to return a variable to a different parent shell.

Thanks,
Han

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