Want to learn the basics of bash and how it can help you as a tech professional? You're in the right place. Here, we'll go over some basic concepts and get you started with building your own commands!

Learn Bash Basics | DevOps

Karandeep Singh
5 Min To Read
14 Nov, 2022
- Terminal
- Devops

Last Modified: 14 Nov, 2022

If you’ve ever worked in a tech or programming field, there’s a good chance you’ve used Bash. It’s one of the most common command-line interpreters available today. While it can seem daunting at first, Bash is actually quite simple to use – with just a few basic commands, you can start performing complex tasks and get work done more quickly. In this blog post, we’ll show you the basics of using Bash, so you can start using it yourself.

Continue reading to learn everything you need to know about getting started with Bash!

Simple Script to Print Hello World

#!/bin/bash
echo "Hello, world!"

Script to Print the Date and Time

#!/bin/bash
date

Script to Print the Current Working Directory

    #!/bin/bash
    pwd

Script to List the Contents of a Directory

    #!/bin/bash
    ls -l

Script to Rename a File

    #!/bin/bash
    mv oldfile.txt newfile.txt

Script to Copy a File

    #!/bin/bash
    cp file1.txt file2.txt

A Bash Script with Arguments

    #!/bin/bash
    echo "My first argument is: $1"
    echo "My second argument is: $2"
    echo "All my arguments are: $*"

A Bash Script that Reads from STDIN

    #!/bin/bash
    read -p "Enter your name: " name
    echo "Hello, $name!"

A Bash Script that Uses Variables

    #!/bin/bash
    name="John"
    echo "Hello, $name!"

A Bash Script that Uses an Array of Values

    #!/bin/bash
    names=("John"