penguinLinux is an operating system.
What is an operating system?
Here is a great definition from the Wall Street Journal:

Operating system software is the program that orchestrates all the basic functions of a computer.

— The Wall Street Journal, Tuesday, Sept 15, 1987, page 40

I specialize in Linux server systems. With¬†expansive features Linux can grow as your needs evolve. Linux can act as a file server for¬†document sharing, and it’s compatible with Windows and Mac computers. It can be a VPN and provide secure remote access to your data outside of the office. It’s also a great web server, this website is running on Linux. This is just a few of the common and useful functions of Linux.