if i export a variable it exports to its child only.
how can i export variables from child shell to parent?

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lak wrote:
> if i export a variable it exports to its child only.
> how can i export variables from child shell to parent?
>
You can't.

Robert

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On 2007-10-18, lak wrote:
>
> if i export a variable it exports to its child only.
> how can i export variables from child shell to parent?

You can't.

However, you can have a script print a value and assign that to a
variable in the parent:

val=$( your_script )

If you need to set more than one variable, have the script (or a
command that allows formatting of its output) print assignment
statements and use eval:

eval "$( date +"year=%Y month=%m day=%d" )"


--
Chris F.A. Johnson, author   |    <http://cfaj.freeshell.org>
Shell Scripting Recipes:     |  My code in this post, if any,
A Problem-Solution Approach  |         is released under the
2005, Apress                 |    GNU General Public Licence

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On Oct 18, 7:20 am, lak <lakindi...@gmail.com> wrote:
> if i export a variable it exports to its child only.
> how can i export variables from child shell to parent?

"Source" the child shell. That is, instead of executing it with:
myshell
run it in the local shell by prepending a period and space:
. myshell

--
Fred Kleinschmidt

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fred.l.kleinschmidt@boeing.com writes:
>On Oct 18, 7:20 am, lak <lakindi...@gmail.com> wrote: 
>
>"Source" the child shell. That is, instead of executing it with:
>    myshell
>run it in the local shell by prepending a period and space:
>   . myshell
>


potentially dangerous.  exit, for example, has significantly
different effect if it is sourced vs. execed.

scott

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