sfcrazy writes: While everyone knows Linux was announced on August 25, 1991 nothing is known about the first actual release of the kernel. But now we know. Torvalds posted a note on his Google+, bringing an end to the mystery: Today is the 25th anniversary of the Linux-0.01 release, I do believe. Normally, the anniversary is counted from the announcement email (August 25), because that was the actual public statement of intent. The 0.01 code drop happened a couple of weeks later, and wasn't publicly announced.