Bash Programming

Bash, a powerful programming language, is perfectly designed for command line and shell scripts. In this module, we’ll learn how to use Bash. Its features will help us solve our daily computer tasks and even automate some of them.

This module covers the general principles of computing operations and basic programming concepts in detail. It will also help us consolidate our new knowledge through exercises for each topic. Overall, this experience should be a great start to our Bash programming journey.

Basic Programming with Bash

## Bash commands

We’re ready to learn our first Bash commands! The following are the steps to execute a shell command:

1. Open the terminal window.
2. Type the command there.
3. Press “Enter.”

The shell will execute our command.

When the shell is busy, it cannot process our input. We can distinguish the shell’s state by the **command prompt**, a sequence of one or more characters. The default prompt is the `#` sign. If the shell prints the prompt, it’s ready to execute our command.


We can take the following actions to navigate the file system:
* Display the current directory.
* Go to a specified disk drive or directory.
* Find a directory or file on the disk.

The corresponding command for each action is shown in the table below.


# Bash commands

We’re ready to learn our first Bash commands! The following are the steps to execute a shell command:

1. Open the terminal window.
2. Type the command there.
3. Press “Enter.”

The shell will execute our command.

When the shell is busy, it cannot process our input. We can distinguish the shell’s state by the **command prompt**, a sequence of one or more characters. The default prompt is the `#` sign. If the shell prints the prompt, it’s ready to execute our command.


Learn the commands needed to navigate the file system.

Before We Begin

File System

Command Information

Bash Extra Features

Scripts Features

Variables and Parameters

Conditional Statements

Arithmetic Expressions and Operations

Bitwise Operations

Logical Operations and Increments

Loop Operators

Functions

Package Manager

Bash Programming from Scratch

Bash Scripts Tools

APPENDIX

Conclusion

File System Navigation Commands

Bash commands