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Shell Programming and Scripting

confusion with export

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# 1  
Old 05-11-2006
confusion with export
Hi,
I have written the following two scripts.

a.ksh --->

FPATH=/users/kushard
autoload b
b
echo "From a.ksh::" $aa

b --->

function b
{
typeset aa
aa="TRUE."
echo "From b::" $aa
export aa
}

But I cannot see the value of aa being populated in a.ksh.
Please let me know where I am wrong.


regards,
Dipankar.
# 2  
Old 05-11-2006
o/p is correct
The o/p is correct. export means - let the variable value be known to its subshells. 'b' is called from a.ksh(parent). So, what the child exports is not visible to parent.

I tried writing a function 'c' -
function c
{
echo "Called form c::$aa"
}

Called it from 'b' and it worked --
function b
{
typeset aa
aa="TRUE."
echo "From b::" $aa
export aa
autoload c
c
}
Now when I run the a.ksh - I get
From b:: TRUE.
Called form c::TRUE.
From a.ksh::
I hope I am clear.
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