Plan 9 is a computer operating system intended as successor to Unix. The last edition the 4th was released in 2002, after which various forks survived on.

Plan 9 chronology

At this moment, resource about Plan 9 is sometimes scattered, sometimes scarce. Below is a summary:

4th Edition only offers 32-bit support.

9Legacy incorporated patches following the 4th Release and 64-bit support for Intel, AMD, ARM, RISC-V etc processors.

From the download pages one may download live system image, then run a simulator as qemu to boot with them.

Plan 9 command manual pages can be found at https://plan9.io/sys/man/1/INDEX.html. Some commands are recognisable as under Unix/Linux. Some are specific to Plan 9: rc is the name of the shell instead of dash or bash. cpu for connecting to remote machine.

http://shithub.us holds many Plan 9-related projects. For example lola a windowing system to supplant the built-in rio.

lola nature theme