Linux - DevOps Blog

Linux

A collection of 43 posts

Introducing KodeKloud Notes App: Your Ultimate Learning Companion

Introducing KodeKloud Notes App: Your Ultimate Learning Companion

Learning Kubernetes and DevOps can be challenging, especially when juggling multiple resources—watching videos, switching between slides, and trying to copy commands from PDFs. We get it. That’s why we built KodeKloud Notes—a centralized, interactive, and user-friendly platform where you can access all the essential text-based content from

Linux chmod Command Made Easy (Complete Guide)

Linux chmod Command Made Easy (Complete Guide)

The chmod command on Linux is used to manage permissions for files and directories. Let's break down how it works, with simple explanations and examples. It's easier to understand through practice. So we'll jump into a Linux terminal, and see the commands we need

Linux Permissions Explained in Simple Terms

Linux Permissions Explained in Simple Terms

Let's make file and directory permissions on Linux easy to understand. How will we do that? By simply looking at: * Why do we need a permission? * What does it do? * And looking at a real example, where we run a command, experiment with that permission, and see its

Linux: Add User to Group

Linux: Add User to Group

On Linux, a user account can be part of one, or more groups. And group membership can give that user certain extra abilities, like: * The ability to read certain files, or directories. * The ability to run sudo commands. * The ability to run docker commands (without needing to run Docker as

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

A Day in the Life of a DevOps Engineer : What It’s Really Like

A Day in the Life of a DevOps Engineer : What It’s Really Like

DevOps is More Than Just a Job Title If you think DevOps is just about automating deployments, think again. A DevOps engineer’s day is a blend of automation, problem-solving, firefighting, and continuous improvement—all while ensuring software gets delivered faster, safer, and with fewer headaches. Every company needs DevOps

Is DevOps Stressful? Myths vs. Reality

Is DevOps Stressful? Myths vs. Reality

DevOps—the role that bridges the gap between developers and operations, automates everything, and keeps the world’s most complex systems running 24/7 without a hitch. Sounds cool, right? But if you’ve been lurking in tech forums, you’ve probably seen people saying: 🚨 “DevOps is a nightmare! You’

Can You Switch to DevOps After 30?

Can You Switch to DevOps After 30?

Switching to DevOps after 30 is not just possible—it can be a smart career move. Many professionals successfully transition into DevOps from software development, system administration, networking, and even non-technical backgrounds. The tech industry values skills, problem-solving ability, and adaptability over age. If you’re committed to learning and

Linux Shutdown Command

Linux Shutdown Command

How do we shutdown a Linux server from the command line? With the shutdown command. This will work for real physical servers, but also virtual machines running in the cloud. To shutdown a Linux machine immediately we can run: sudo shutdown now When to Avoid Immediate Shutdown, and Schedule Instead

How to Get the Size of a Directory on Linux

How to Get the Size of a Directory on Linux

To get the size of a directory, on Linux, we can run this command: du -sh /path/to/directory/ du is short for "disk usage". Here's an example. To see the size of the /usr/bin/ directory we would run this command: du -sh /usr/bin/

How to Rename a File on Linux

How to Rename a File on Linux

The command to rename a file on Linux-based operating systems is: mv old_name new_name That's if the file is located in our current directory. Not in the current directory? Then we first have to "move" there with the cd command. Here's a

How to Check Linux Version (for the Operating System, and the Kernel)

How to Check Linux Version (for the Operating System, and the Kernel)

Sometimes we'll need to log in to remote Linux machines. And with just a command line to look at… It can be hard to know exactly what Linux distribution is running here. How is the operating system called? Ubuntu, Debian, or Red Hat? And if it's

How to Check Disk Space on Linux

How to Check Disk Space on Linux

💡We still call it "disk space", a remnant of the era when almost everything was stored on hard disks. Nowadays, since data can be stored on SSDs, or other devices, a more generic term like "storage space" is used. But to keep in line with what

How to Remove a Directory in Linux

How to Remove a Directory in Linux

The command to remove a directory (folder) on Linux is: rm -r /path/to/directory/ It will delete it no matter if the directory is empty, or not empty. -r is the option that tells the rm (remove) command to do this recursively. That is, remove the directory itself, along

How to Terminate, or Kill a Process in Linux (Complete Guide)

How to Terminate, or Kill a Process in Linux (Complete Guide)

As long-term computer users, we've certainly had to use something like Windows' Task Manager, at least a few times. An application becomes unresponsive, or slow, or simply misbehaves. And clicking on that "X" button just doesn't work. So we fire up Task Manager,

How to List All Users in Linux

How to List All Users in Linux

Operating systems based on the Linux kernel support multiple user accounts. Instead of "user accounts" they're often just called "users". So let's see how to list all of these users / accounts. First, we'll explore the commands. And at the end

How to Rename a Directory in Linux

How to Rename a Directory in Linux

What Windows calls folders, Linux-based operating systems call directories. Linux Command to Rename a Directory (Quick Examples) If you want the quick answers, here they are. Using relative paths, to rename a directory called Backups to Backups_2024, we'd run a command like this: mv Backups Backups_2024

How to List All Groups in Linux

How to List All Groups in Linux

Linux provides its users with a robust and flexible environment. As they explore this vast landscape, understanding user groups becomes essential. Groups play a critical role in managing permissions, facilitating collaboration, and maintaining a secure and organized system. In this blog, we will explore the available methods and commands to

linux vs redhat

LFCS vs RHCSA: Which is Best For You? | Linux vs RedHat

LFCS is Great for a broad understanding of Linux. It's perfect for beginners. RHCSA is Ideal if you want to specialize in Red Hat Linux, especially for working in big companies.

10 Best Linux Applications

10 Best Linux Applications

From web browsers to programming tools and multimedia applications, the Linux software ecosystem has much to offer for users of all levels of expertise.

4 Commands to Check File Size in Linux

4 Commands to Check File Size in Linux

Whether you need to manage disk space, transfer files over the network, or optimize system performance, knowing the file sizes in a Linux system plays a critical role. In this blog post, we’ll explore four different methods you can use to determine a file's size in Linux.

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 Search Packages With Apt Search Command

How to Search Packages With Apt Search Command

When you want to install a package on Debian-based Linux distributions using apt, you need to know the exact name of the package. But what if you don’t remember the name? Maybe you remember a portion of a multi-word package name or a few distinct characters. How do you