Is Raspberry Pi a Linux?

The Raspberry Pi operates in the open source ecosystem: it runs Linux (a variety of distributions), and its main supported operating system, Pi OS, is open source and runs a suite of open source software.

Is Raspberry Pi 4 Linux?

With the larger memory of the Raspberry Pi 4 series, it is now more practical to run Ubuntu. … With the introduction of the Raspberry Pi 4 series, with more than 1GB of memory, it has become much more practical to install and run Linux distributions other than the standard Raspberry Pi OS (formerly known as Raspbian).