LUnix is a Unix-like multi-tasking operating system designed to run natively on the Commodore 64 and Commodore 128 home computer systems. It supports TCP/IP networking. Unlike most Unix-like systems, LUnix is written in 6502 assembly language instead of C.
The first version of LUnix was released in 1993; the current version 0.21 dates from 2004. From Wikipedia
