# Arrays

An array keeps a list in numbered slots, counted from 0: songs=("Highway Tea" "Window Down") makes one, ${songs\[0\]} reads a slot, ${#songs\[@\]} counts the items, songs+=( ) adds one, "${songs\[@\]}" hands on every item in one piece, and mapfile -t fills an array from a file's lines.

![Cheat sheet for the lesson Arrays: An array keeps a list in numbered slots, counted from 0: songs=("Highway Tea" "Window Down") makes one, ${songs\[0\]} reads a slot, ${#songs\[@\]} counts the items, songs+=( ) adds one, "${songs\[@\]}" hands on every item in one piece, and mapfile -t fills an array…](https://fsdtrainingmedia.blob.core.windows.net/public/images/2026/11/b5c153853aaa4e7ebc2fd454e2903565.webp)

- Category: Bash
- Level: Journeyman
- Tags: Array, array-index, linux, mapfile, random, unix, word-splitting
- Updated: November 10, 2026

Source: https://www.ask-codey.com/cheat-sheets/bash-arrays-cheat-sheet