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shell script question

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.


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