Forty years ago today, Ken Thompson and Dennis Ritchie started hacking together a new operating system that would fix the problems they saw with the clunky Multics. This would become Unix, the progenitor of all Posix-compliant operating systems, including the open-source wunderkind Linux.
According to the Slashdot comments, the venerable operating system celebrated its birthday by issuing the following command:
find my_lawn -name kids* | xargs rm -rvf