How to get the length of an array in Bash

In this tutorial, we are going to learn about how to find the length of an array in Bash.

The length of an array means, the total number of elements present in the given array.

Getting the array length

To get the length of an array, we can use the {#array[@]} syntax in bash.

Here is an example:

arr=()
arr+=('pears')
arr+=('grapes')

echo ${#arr[@]}

Output:

2

The # in the above syntax calculates the array size, without hash # it just returns all elements in the array.