TARTAN CALENDAR      Jan     Feb     Mar     Apr     May     Jun     Jul     Aug     Sep     Oct     Nov     Dec     TARTAN CALENDAR 

Click the tartan to view its entry in The Scottish Registers of Tartans which includes registration details, restrictions, and registrant information.


Unregistered tartans may link to one of the web's online design environments for similar information.


For any questions about reproduction of designs or weaving of these tartans, please contact the registrant directly or via this website.

Unix Operating Systems Celebration Day

"Don't Panic!"

In 1969, Bell Labs employees, including Ken Thompson, Dennis Ritchie, Douglas McIllroy, and Joe Ossanna, decided to unofficially continue work on a lapsed internal project (Multics) for a new time-sharing operating system. In 1970, the group coined the name Unics (later spelled Unix) for Uniplexed Information and Computing Service, as a pun on Multics, which stood for Multiplexed Information and Computer Services. One of its descendants, the open-source Debian OS, is currently the only computer operating system with its own tartan (with a specially encoded sett). Debian is one of the most popular Linux distributions, with many other distributions created from its codebase, including Ubuntu and Knoppix, and as such contains many classic command line "easter eggs." The code names of Debian releases are names of characters from the Toy Story films. 🖥️ ⌨️

In August of 1969, Ken Thompson, created the first version of the Unix operating system.  Most operating systems can be grouped into two different families.  Aside from Microsoft's Windows NT-based operating systems, nearly everything else traces its heritage back to Unix.


One of its descendants,  the Debian OS, also announced in August,  is currently the only computer operating system with its own tartan!

The Debian project is a Unix-like computer operating system that is composed entirely of free software, and packaged by a group of individuals participating in the Debian Project. 


First announced on August 16, 1993, by Ian Murdock, who initially called the system "the Debian Linux Release". The word "Debian" was formed as a portmanteau of the first name of his then-girlfriend Debra Lynn and his own first name.

The release included the Debian Linux Manifesto, outlining Murdock's view for the new operating system.  In it he called for the creation of a distribution to be maintained openly, in the spirit of Linux and GNU.

This tartan was designed in 2007 for the eighth annual gathering of developers from all over the world in Edinburgh.  The colours are references to various logos: Reds for the Debian swirl, Blue for Captain Blue-Eyes (the old Debian logo), and Yellow, Black & White for Tux, the Linux logo. If the image is rotated 180 degrees, the White can be seen to be arranged so as to spell out DEBIAN in Morse code (with a correct 1:3 ratio for dots to dashes, and for the pauses in and between letters).

For a history of origin of the Unix operating system and its descendants, click the Debian logo!