About export

Shell Programming and Scripting
1

Hi all,

I am calling a script from main script.
The called script (second script) have to return some value, i can use exit to pass but in exit i have to pass some other value.

i used "export Var", but this command resides in a function of second script.

could you please tell me how to pass a variable(that resides in function) of called script that has to be passed to calling script,

Thanks.

2

Use "return" in 2nd script and check the value in main script.

# Main Script
SCRIPT_DIRECTORY/SecondScript.sh
ret=$?
if [ $ret != 0 ]
then
exit 1
fi

#SecondScript.sh
command ...
ret=$?
if [ $ret != 0 ]
then
echo "Second script has errors"
return 1
else
echo "Second script Success"
return 0
fi

3

if do like this it will proceed further statements of the second script or skip execution.
remember i am exporting a variable from a function in second script.

please tell me. how return and exit will work.

4

Extract from "man rerurn"

exit will cause the calling shell or shell script to exit
with the exit status specified by n. If n is omitted the
exit status is that of the last command executed (an EOF
will also cause the shell to exit.)

return causes a function to exit with the return value
specified by n. If n is omitted, the return status is that
of the last command executed.