The Complete Guide to Bash Programming/

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Exercise: Variable Scope

Exercise: Variable Scope

Put to practice what we have learned about variable's scope.

We'll cover the following...

Exercise

What text does the script in quiz-variable-scope.sh print to the console when it executes?

#!/bin/bash

bar()
{
    echo "bar1: var = $var"
    var="bar_value"
    echo "bar2: var = $var"
}

foo()
{
    local var="foo_value"

    echo "foo1: var = $var"
    bar
    echo "foo2: var = $var"
}

echo "main1: var = $var"
foo
echo "main2: var = $var"

Output explanation

The quiz-variable-scope.sh script prints the following text:

main1: var =
foo1: var
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