bash

Arrays are essential in Bash scripting for managing multiple related data items under one variable name. While indexed arrays use numerical indices, Bash also supports associative arrays, where each element is associated with a string key rather than a number. This makes associative arrays perfect for storing data pairs, like

Variables in Bash are a fundamental part of scripting. They allow you to store, retrieve, and manipulate data within your scripts.

When writing Bash scripts, you'll often encounter different constructs used for evaluating expressions: test, [, and [[.

In Bash scripting, the test command is a fundamental tool used to evaluate conditions and make decisions based on those conditions.

Bash globbing is a fundamental feature that allows you to match multiple filenames or paths using wildcard characters.

The Bash shell offers a powerful feature called "heredoc" (short for "here document") that allows you to pass multiline text or code to commands in a streamlined and readable way.

Bash pipelines are a powerful feature that let you chain multiple commands together, passing the output of one command as input to the next.

Like many other programming languages, Bash supports a set of bitwise operators that enable you to perform operations on individual bits within a data value.

Subshells are a fundamental concept in Bash scripting that can be both powerful and confusing, especially for beginners.