A free, open-source operating system kernel, first released in 1991, that powers most servers, Android phones, and countless devices.
Linux was started by Linus Torvalds in 1991 as a hobby project and grew into one of the largest collaborative software efforts in history. Strictly speaking, Linux is the kernel; complete operating systems built around it, called distributions, add tools, desktops, and package managers. Popular distributions include Ubuntu, Debian, Fedora, and Arch Linux.
Linux runs the majority of web servers and cloud infrastructure, all of the world's top supercomputers, Android smartphones, routers, smart TVs, and many embedded devices. Developers value it for stability, security, flexibility, and powerful command-line tools. Learning basic Linux commands, such as navigating directories, managing files, and using SSH, is a valuable skill for anyone working in software, DevOps, or cybersecurity.
A free, open-source distributed version control system that tracks changes to code and lets many developers collaborate safely.
KernelThe core part of an operating system that manages hardware, memory, processes, and communication between software and devices.
Open SourceSoftware whose source code is publicly available under a license that lets anyone use, study, modify, and share it.
Who benefits from CompTIA Security+, how it fits DoD 8140 job requirements, what changes with the V8 exam and which skills and certifications to pair it with.
A practical roadmap to becoming a cybersecurity analyst: the skills employers want, which certifications to earn first, realistic entry paths and official BLS pay data.
A practical roadmap from networking basics to cloud networking, with the certifications, lab work and first jobs that lead to a network engineer role.