This pattern is only six bucks and helps us continue to spread the word about free code and culture!
The Linux sweater is a celebration of the free and open source movement. Tux the Penguin, the mascot of the Linux free operating system, looks pretty content sitting on top of a border of binary that encircles the sweater and spells "free" (that's free as in freedom, not free as in beer). The borders of the cuffs salute the EFF (Electronic Frontier Foundation) and the FSF (Free Software Foundation), two organizations that are dedicated to preserving our digital rights and freedoms in this increasingly technological age.
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