Array Length

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Array Length

Array Length

${#array[@]} gives the number of elements currently in the array. This works for both indexed and associative arrays. It's commonly used as the loop bound when iterating by numeric index instead of with foreach-style iteration.

Note: ${#array[@]} counts elements; ${#array[0]} (no @) instead gives the length of just the first element's string.

Example: Array Length

bash

#!/bin/bash
items=("pen" "notebook" "eraser" "ruler")
echo "Number of items: ${#items[@]}"

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Array Basics
Indexed Arrays in Depth
Indexed Arrays
Associative Arrays
Array Slicing
Array Length
Iterating Arrays
Looping Arrays
Array Length and Removing Elements
Reading Command Output Into an Array

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Array Length

Array Length

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