Bash Scripting - DevOps Blog

Bash Scripting

A collection of 18 posts

Do You Need a Degree to Be a DevOps Engineer? A 2025 Guide

Do You Need a Degree to Be a DevOps Engineer? A 2025 Guide

The Myth vs. The Reality When you think of a DevOps Engineer, you might picture someone with a shiny Computer Science degree from a top-tier university. That was the old rulebook. In today’s cloud-powered, open-source-fueled, community-driven tech world… the rules have changed. 👉 The truth? A degree is nice to

The Ultimate DevOps Roadmap for 2025: A Step-by-Step Guide to Mastering DevOps

The Ultimate DevOps Roadmap for 2025: A Step-by-Step Guide to Mastering DevOps

DevOps has become one of the most in-demand skill sets in the tech industry, playing a crucial role in modern software development and operations. As companies move towards automation, cloud-native technologies, and faster deployments, the need for skilled DevOps professionals continues to grow. But where do you start? How do

Can Anyone Learn DevOps?

Can Anyone Learn DevOps?

The demand for DevOps has skyrocketed in the past few years, and many IT professionals, students, and even those from non-technical backgrounds are wondering: Can anyone learn DevOps? The short answer is yes, but let’s break it down into what it truly takes to become proficient in DevOps and

Bash Boolean Variable in a Shell Script

How to Declare Bash Boolean Variable in a Shell Script

Bash scripting is an essential skill for Linux and Unix system administrators. It enables them to automate tasks and develop efficient workflows. Understanding how to declare and utilize boolean variables within a Bash script is at the core of script development. In this blog, we will explore the concept of

Bash Echo Commands: Use Cases and Examples

Bash Echo Commands: Use Cases and Examples

Bash echo commands are the unsung heroes of the command line, often overlooked but crucial for any Linux or Unix system user. At first glance, the echo command might seem simple, just a messenger echoing text to the terminal. However, its utility goes far beyond this fundamental task. This blog

Bash Regex: How to Use Regex in a Shell Script

Bash Regex: How to Use Regex in a Shell Script

In this blog post, we understand what regex is, along with some common metacharacters.

Advanced Bash Scripting Course: Your Pathway to Command-Line Mastery

Advanced Bash Scripting Course: Your Pathway to Command-Line Mastery

In the dynamic world of DevOps and system administration, command-line proficiency is a crucial skill. Bash, one of the most widely used command-line shells - and the default for most Unix-based systems, including popular Linux distributions - offers immense power and versatility. Mastering Bash scripting can give you a competitive

How to Use Bash Getopts With Examples

How to Use Bash Getopts With Examples

Getopts is a powerful shell command used to parse command line options and arguments. It provides a structured way to handle complex input patterns, thereby making your scripts more readable and maintainable. In this blog post, we’ll start with an understanding of what positional parameters are and their inherent

How to Return Value From a Bash Function

How to Return Value From a Bash Function

Bash, one of the most popular shell scripting languages, handles functions a little differently from what you might expect if you're coming from other programming languages. In particular, returning values from Bash functions can be a bit tricky to understand for newcomers. In this blog post, we’ll

How to Extract Bash Substring

How to Extract Bash Substring

Extracting substrings from a larger string is a fundamental operation in text manipulation, which is an essential skill in Bash scripting. In this blog post, we'll explore three methods that you can use to extract substrings in Bash. We will first look at using Bash's built-in

Eof Bash: What Is It and How Does It Work?

Eof Bash: What Is It and How Does It Work?

Have you ever encountered the term EOF in a Bash script and wondered what it means or how to utilize this feature effectively? If so, you're in the right place. In this blog post, we’ll dive deep into the concept of EOF in Bash, explaining what it

How to Convert Bash String to Lowercase

How to Convert Bash String to Lowercase

String manipulation is a fundamental aspect of scripting in any programming language, and Bash is no exception. One common task is converting the case of strings, which is particularly useful in text processing and analysis. In this blog post, we’ll explore two methods of converting Bash string to lowercase

Bash Compare Strings: How to Check if Two Strings Are Equal

Bash Compare Strings: How to Check if Two Strings Are Equal

Knowing how to compare strings is an important skill for validating user input or processing text data. In this blog post, we’ll look at four different methods you can use to check if two strings are equal. We’ll use examples to explain each method, providing you with a

How to Make a Bash Script File Executable in Linux

How to Make a Bash Script File Executable in Linux

A Bash script is essentially a text file containing a series of commands. To make a Bash script file executable means giving it permission to be run as a program. In this blog post, we'll start by taking a deep dive into the concept of file permissions in

How to Count the Number of Files in a Directory in Linux

How to Count the Number of Files in a Directory in Linux

Working with Linux often involves dealing with files. One common but deceptively complex task is counting the number of files in a directory. In this blog post, we will explore three different methods for counting the number of files in a directory, each with its own benefits and nuances. Let’

How to Check if a File Exists in Bash

How to Check if a File Exists in Bash

Let's say you're creating a Bash script to save some data in a file. It's important to ensure that the file exists before you try to write to it. If not, your script may not work as expected. This is just one example. In

How to Read a File Line by Line in Bash

How to Read a File Line by Line in Bash

File manipulation is an essential skill when dealing with scripting and automation. Whether you’re analyzing log files, processing data sets, or parsing configuration files, the ability to read and interpret file content is critical. In this blog post, we’ll learn how to read a file line by line

How to Write Bash Scripts to Loop Through Array Values

How to Write Bash Scripts to Loop Through Array Values

Looping through array values is a common task in Bash scripting. For instance, you might want to loop through an array of filenames and execute specific commands on each one. In this blog post, you’ll learn how to write bash scripts that utilize for loops to iterate through array