What is Linux, and why does it matter for backend and cloud work?
Options
- A free, open source OS family that runs most servers and containers (Correct option)
- A programming language that is used to write web servers
- A cloud provider that rents virtual machines by the hour
- A Java framework that is used to build backend services
Answer
A free, open source operating system family that runs most servers, containers and cloud machines
Why
Linux is an operating system, like Windows or macOS. It is open source and runs on a very large share of servers and cloud virtual machines.
Docker containers on a Linux machine share the host's Linux kernel, and most container images are based on Linux distributions such as Ubuntu, Debian or Alpine.
So you will often connect to Linux servers and use its terminal.
Remember
Linux = the OS of most servers and containers.