Question

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rated 0 times [ 22] [ 0] / answers: 1 / hits: 37890 / 2 Years ago, sat, november 12, 2022, 10:38:04

I want to get a variable from another script, as demonstrated in this question on Stack Overflow:

However, the answer uses the source command which is only available in bash. I want to do this in a portable way.

I have also tried

a.sh

export VAR="foo"

echo "executing a"

b.sh

#!/bin/sh

./a.sh

echo $VAR

But of course that does not work either. How to do this?

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answered 2 Years ago ndaavi · Accepted Answer

First of all, be aware that var and VAR are different variables.

To answer your question the . command is not bash-specific:

# a.sh

num=42

# b.sh

. ./a.sh

echo $num

The variables in "a" do not need to be exported.