LINUX & UNIX Courses and Certifications

UNIX (from 1969) is a specification, that is, a book, a description of what an operating system must comply with in order to call itself UNIX. UNIX is NOT a program but a description.

Linux (from 1991) is the name of a program, an operating system, originally written by Linus Torvalds from Finland.

Taken as a whole, UNIX is by far the most widely used operating system in the world. You can read in many places online that there are far more UNIX systems than all other operating systems combined.

UNIX is the operating system standard above all others:

macOS is UNIX, iOS is a UNIX, Linux is UNIX, Android is Linux, which is UNIX

BSD (Open Source), AIX (IBM), HP-UX (HP), Solaris (Oracle) … are also UNIXes

Linux is the most widely used UNIX operating system, and there are a wealth of distributions. There are free downloads: Debian, Ubuntu, CentOS, Gentoo, Fedora... As well as the commercial ones: Red Hat Enterprise Linux, SUSE Linux Enterprise Server...

Linux is especially strong where stability, flexibility and automation matter.

You'll find Linux in, among other things: Cloud solutions and virtual servers. Web servers such as Apache and Nginx. Database servers and application operations. Docker containers and Kubernetes environments. DevOps and automation with shell scripts and Ansible. Cybersecurity, logging, hardening and access management. Network equipment, firewalls and embedded systems. Android-based devices and specialized hardware. Supercomputers and high-performance computing

In short: If you work professionally with IT infrastructure, you will sooner or later come into contact with Linux.

Linux isn't just relevant for traditional system administrators. It has become a basic working language in modern IT.

When you work with cloud, server operations, DevOps, Docker, Kubernetes, cybersecurity or automation, you quickly run into Linux concepts. You need to be able to navigate the file system, understand users and permissions, read logs, manage processes, troubleshoot networks, install software packages and work efficiently in a shell.

Many modern tools hide the complexity behind polished user interfaces and automated pipelines. But when something fails in production, it's often your understanding of Linux that determines whether you can find the cause quickly.

That's why Linux is still one of the most valuable technical skills in IT.

Linux plays a central role in many of the technologies that power modern IT environments:

Cloud servers in Azure, AWS and Google Cloud. Container platforms such as Docker and Kubernetes. Web servers such as Apache and Nginx. Automation with shell scripts and Ansible. CI/CD, deployment and application operations. Logging, monitoring and troubleshooting. Security, hardening, access management and patching. Embedded systems, network equipment and IoT.

This means Linux isn't just an operating system you “can choose.” It is often the very foundation of the systems organizations already use.

If you want to understand modern infrastructure, Linux is a natural place to start.

It depends on your role.

If you work as a user, in support, or as a technical generalist, you need to be able to navigate the system confidently and understand the file structure, permissions, commands and the shell.

If you work in operations, you need to be able to install, configure and maintain Linux systems, and manage packages, services, users, processes, networking and security.

If you work with cloud or DevOps, you need to be able to read logs, automate tasks, understand server environments, work with containers and troubleshoot across the application, network and operating system.

If you work in security, you need to understand permissions, users, services, logging, firewalls, SSH, access control and hardening.

That is exactly why our Linux/UNIX courses are structured as a progression, where you can start with basic use and build toward operations, security, automation and containers.