bash

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.

Arrays can be particularly useful when you need to work with a collection of related data items, rather than using multiple individual variables.