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There is no doubt that Linux is one of the most popular operating systems to run server-side applications. I have seen almost all Java applications running on Linux barring a couple of them which runs on Windows as a service.
That's why it's very important for any programmer, IT professional, or a developer to learn and understand Linux, both the operating system, as well as command line.
Linux is one of the most important skills because it serves you for a long time. It not only makes you productive and teaches a lot of automation by encouraging you to write shell scripts, but also it is essential for many IT jobs like support engineers, testers, developers, business analyst, system admins, and even project/product managers
It is also one of the essential tools for programmers without knowing Linux is difficult to find out what's going on in an application that runs on Linux. It also separates a good programmer from an average one. A good programmer is often good at Linux commands as well.
If you want to learn Linux or UNIX, both operating system and command line then you have come to the right place. In this article, I'll share some of the free Linux courses you can take online to learn Linux at your own pace and at your own time.
These courses are free but it doesn't mean they are of inferior quality. They provide a nice overview of many essential Linux concepts, including the Linux command line and essential commands like find, grep, sed, curl, and chmod.
Of course, they are not as comprehensive as some of the paid courses down there but still, you can use them to start your Linux journey. Btw, if you don't mind spending few bucks on something worth learning the Learn Linux in 5 Days and Level Up Your Career is the best one to start with.
If you have been here before then you might be familiar with my 3 point formula to learn new technology.
In general, whenever I have to learn a new programming language, a framework or a library I do three things, first join an online course, second, buy a good book and third, create a toy project to start with.
These 3 things have helped me to learn many useful tools, technologies, frameworks, and libraries and I also suggest you follow these.
In the past, I have shared some Linux command line books and today I'll share some of the free online training courses to learn Linux in 2021.
You can first take these courses and then read those books to learn and master Linux concepts. Once you have a good idea, you can start a project like writing a shell script or something to take your knowledge to the next level.
This article contains courses to learn both Linux OS as well as Linux command line, which is more important. Anyone who wants to learn Linux can use these free courses but it's more suited for developers, QA, System admins, and programmers.
This is a good introductory course on Linux which will tell you what is Linux, its history, and what does different Linux Distributions mean like CentOS, RedHat, Fedora, Ubuntu, etc. Basically all the knowledge you need to learn the Linux commands.
Here is the link to join the course: Introduction to Linux
You will also learn how to set up your test lab to run the Linux commands using VirtualBox and CentOS.
Once you have got your setup, the course will then teach you basic Linux commands like how to create and move files and directories, how to archive and compress files, how to combine two or more commands using pipes, and how to redirect output to a file.
In short, a good introduction to Linux for beginners who are hearing Linux first time. After attending this course you will have enough passion to learn more about Linux and find out more about your favorite Linux distribution.
This is an awesome course to learn the Linux command line. As I have said before, the command line is an incredibly useful tool for developers and programmers.
If you want to get into Ruby on Rails, Django, Devops[https://medium.com/javarevisited/13-best-courses-to-learn-devops-for-senior-developers-in-2020-a2997ff7c33c], Unix customization and so much more, learning the command line will help you immensely.
Here is the link to join the course: Learn the Linux Command Line: Basic Commands
In this course, you will learn most of the essential Linux commands related to file management, process management, system management, etc.
The command line course is mainly for Linux users but Mac users can also benefit though not everything is applicable to them.
For beginners, the command line may seem difficult and complex and it may be hard to sit down and learn on your own and that's where this course steps up. It will teach you how to use the command line and skip the boring, unnecessary stuff that you may never use.
This is a free Linux course from Red Hat itself. In this official Red Hat training course, Steve Bonneville, a technical curriculum architect for Red Hat Training, will teach you the basics of Linux and demonstrate basic practical techniques of Linux use and system administration tasks for IT professionals.
Here is the link to join the course: Red Hat Enterprise Linux Technical Overview
As Linux is used to host server-side applications, in the cloud as well as on containers which host applications on data center it has become one of the must-know technology for IT professionals and the same is interested in this course.
After finishing this free Linux course, you will have a good understanding of the Linux operating system. Short lectures and demonstrations will cover distribution, shell, kernel, userspace, file hierarchy, permissions, and more.
This is another awesome free course on Linux from someone who has worked more than 25 years in Linux.
The author Jason Cannon has started his IT career in the late 1990s as a Unix and Linux System Engineer and he has shared some of his real-world Linux experience in this course.
Here is the link to join the course: Learn Tutorials and Projects
In this course, you will learn some of the practical tasks in Linux like how to install an SSL Certificate on CentOS Linux and Apache, how to load Balance HTTP and Web Traffic Using Nginx and how to configure MySQL Master-Slave Replication on Ubuntu Linux.
These practical tasks will help you to get going in Linux and give you the confidence to work in real servers.
If you want to learn the Linux command line but happened to work on Mac or Windows then this is the perfect course for you.
In this course, you will learn how you can set up an Ubuntu Linux server on VirtualBox to get a taste of the Linux command line on Mac or Windows itself.
Here is the link to join the course: Learn Linux on a Mac
This is the first step towards learning Linux commands, particularly if you do most of your work in Mac or Windows. Although it takes a lot of time to become an expert in the Linux command line, having a lab setup is the best way to try out those commands by yourself.
Also using a VM as a virtual box in Mac or Windows is a safe idea because you can easily delete it and start again if something goes wrong, and more importantly, you can work offline without an Internet connection.
In Today's world, Linux is very widely used in Internet infrastructure powering Web servers, Public Cloud infrastructures like Amazon AWS, Microsoft Azure, Google Cloud and Private Clouds running on OpenStack.
So it will be really worth it if you can get some basic experience on the Linux OS before you start working on Cloud servers.
That's all about some of the free courses to Learn Linux online. As I have said before, Linux is a must-have skill for any programmer or IT professional. You can do a lot more if you know Linux.
It also opens a door of opportunities because most of the real-world applications run on a Linux server. And the best part of learning the Linux concept is that it will serve you for a long time. It will not become obsolete as a framework or library will.
Other Free Online Courses for Programmers
5 Free Courses to Learn Data Structures and Algorithms
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5 Free Courses to Learn Maven and Jenkins
5 Free Courses to Learn Python from scratch
5 Courses to Learn Big Data and Apache Spark
5 Free Courses to Learn Git and Github
5 best Courses to Learn Cloud Computing
5 Free AWS Practice Questions for Solution Architect Certification
Thanks for reading this article so far. If you like these free Linux courses then please share with your friends and colleagues. If you have any questions or feedback then please drop a note.
P.S. --- If you just want to start with one course to learn DevOps, I think the Learn Linux in 5 Days and Level Up Your Career is the best one to start with.
P.S. S. --- If you already know Linux and thinking about how you can improve your productivity and speed then you can also see my article 10 tips to work faster in Linux command line, if you have other tips, you can also share too.