What are the main Linux distributions you have used or know?

Main Linux distributions that are frequently used and well-known:

• Ubuntu — a popular distribution for desktop and server systems, focused on ease of use and support.
• Debian — a stable and reliable distribution, often used as a base for other systems.
• Fedora — a distribution with the latest technologies, often used for development.
• CentOS / Rocky Linux / AlmaLinux — server distributions compatible with Red Hat Enterprise Linux.
• Arch Linux — a minimalist distribution for experienced users, with a rolling release model.
• openSUSE — a distribution with user-friendly administration tools.

Knowing these distributions helps understand differences in package managers, systems, and administration approaches, which is useful in developing and deploying applications on Linux.