A reader wrote a letter to me (oh happy day!), and although I'm still
not entirely sure what she's trying to accomplish, it's an interesting
puzzle to try to tackle anyway. Here's what she asked:
In my last article, we began an exploration of date math by validating a given date
specified by the user, then explored how GNU date offers some slick math
capabilities, but has some inherent limitations, the most notable of which is
that it isn't on 100% of all Linux and UNIX systems.
Let's start with some homework. Go to Google (or Bing) and search
for "privacy is dead, get over it". I first heard this from Bill
Joy, cofounder of Sun Microsystems, but it's attributed to a number of
tech folk, and there's an element of truth to it. Put something on-line
and it's in the wild, however much you'd prefer to keep it under
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