25 Bash Script Examples for Linux VPS Enthusiasts

Bash or Bourne-again shell is one of the most popular shells and command languages for Linux VPS enthusiasts. It was first released in 1989 and has been used as the default shell for most Linux distributions ever since.

Bash scripting allows users and system administrators to automate processes and save hundreds of hours of manual work. In this tutorial, we will introduce you to what bash scripting is and provide over twenty useful bash script examples to start your bash scripting journey.

What Is Bash Scripting Used For

Before we dive into the examples, let’s first understand what bash and bash scripting are. Bash is a command-line interface interpreter that runs in a text window where users can manage and execute shell commands. Bash, or shell scripting, is the process of writing a set of commands to be executed on a Linux system. A file that includes such instructions is called a bash script.

Simply put, the bash interpreter reads the bash script and executes the commands at the same time. This allows Linux users to execute hundreds of commands with a single click instead of inputting them one by one. Bash scripting is the go-to choice for increasing productivity, setting up automation, and eliminating repetitive tasks.

25 Bash Script Examples

The following section covers 25 of the most popular bash scripting examples, including variable manipulation and echoing out various values. We will also cover functions, arrays, loops, and much more.

1. Hello World

Hello World is the most simple bash script to start with. We will create a new variable called learningbash and print out the words Hello World. First, open a new shell script file with a text editor of your choice:

nano hello.sh

Paste the following lines into it:

#!/bin/bash
# Creates a new variable with a value of "Hello World"
learningbash="Hello World"
echo $learningbash

The first line (/bin/bash) is used in every bash script. It instructs the operating system to use a bash interpreter as a command interpreter.

2. Echo Command

The echo bash command can be used to print out text as well as values of variables. In the following example, we will showcase how quotation marks affect the echo command. First, open a new bash script file:

nano echo.sh

This simple bash script example will create a new variable and print it out while using different quotation marks.

#!/bin/bash
provider="Hostinger"
echo 'The best hosting provider is $provider'
echo "The best hosting provider is $provider"

As you can see, if the echo bash command is used with double quotation marks (""), then the script will print out the actual value of a variable. Otherwise, if the single quotation marks ('') are used, it will print out only the name of a variable.

Continue reading the article on Hostinger’s blog for the rest of the bash script examples.

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