Linux Computers

        n = ((n >>  1) & 0x55555555) | ((n <<  1) & 0xaaaaaaaa);
        n = ((n >>  2) & 0x33333333) | ((n <<  2) & 0xcccccccc);
        n = ((n >>  4) & 0x0f0f0f0f) | ((n <<  4) & 0xf0f0f0f0);
        n = ((n >>  8) & 0x00ff00ff) | ((n <<  8) & 0xff00ff00);
        n = ((n >> 16) & 0x0000ffff) | ((n << 16) & 0xffff0000);

                -- C code which reverses the bits in a word.

Nearly every complex solution to a programming problem that I
have looked at carefully has turned out to be wrong.
                -- Brent Welch

Never make anything simple and efficient when a way can be found to
make it complex and wonderful.

Never put off till run-time what you can do at compile-time.
                -- D. Gries

Never test for an error condition you don't know how to handle.
                -- Steinbach

Never trust a computer you can't repair yourself.

Never trust an operating system.

Never try to explain computers to a layman.  It's easier to explain
sex to a virgin.
        -- Robert Heinlein

(Note, however, that virgins tend to know a lot about computers.)

Never underestimate the bandwidth of a station wagon full of tapes.
                -- Dr. Warren Jackson, Director, UTCS

New crypt.  See /usr/news/crypt.