Linux’s Perfect Storm

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Though nobody knew it at the time, it turns out that April 1, 2001 was an important date in the annals of the Linux operating system. That was the
deadline (mandated by the Securities and Exchange Commissions) for equities markets and trading companies in the United States to switch from their
centuries-old practice of trading shares in fractions of a dollar to a decimal-based trading system.

Link: linux-mag.com