Check if element exists in array in bash

Here’s a little function to verify if an element exists in a Bash array.

function elementExists() {
    elements=${1}
    element=${2}
    for i in ${elements[@]} ; do
        if [ $i == $element ] ; then
            return 1
        fi
    done
    return 0
}

It takes an array as first argument and the element as the second and will return 1 if the element exists in the array. You can now call the function like this:

elementExists my_array my_element