“The most famous clock in the world? It might be Big Ben in
London — unless you’re a longtime Unix computer user.“
“In that case, the most famous clock might be the one that comes
with every X Window system, XClock. It’s nothing but a resizeable
analog clock — one with hands, in other words — that you can put
anywhere on your screen….”
“But it’s time for a change. There’s a much better clock than
XClock. It’s rclock, spelled just like that. (A lot of Linux and
Unix programs have all-lower-case names, so you’ll just have to get
used to it. If a name looks odd that way, just give it time. It
won’t after a while.)”