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Bash - return values from functions

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Created by:

Zeeshan-Peel

850

This article will show you how to return values from functions in Bash.

Practical examples

Edit

1. By setting the result to a global variable

Edit

xxxxxxxxxx
 
#!/bin/bash
​
my_function() {
    result="sample value"
}
​
my_function
echo $result

Output:

xxxxxxxxxx
 
sample value

Note:

Remember that using global variables is not a safe solution, especially when you are creating a large project.

2. Better solution - use local variables in your function

Edit

xxxxxxxxxx
 
#!/bin/bash
​
my_function() {
    local local_result="sample value"
    echo "$local_result"
}
​
result=$(my_function)
echo $result

Output:

xxxxxxxxxx
 
sample value

Note:

`my_funciton` is an alternative notation to $(my_function).

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