Well, just below the Plan 9 sections comes this: http://catb.org/~esr/writings/taoup/html/ch20s03.html#id3016155 http://catb.org/~esr/writings/taoup/html/ch20s0

Well, just below the Plan 9 sections comes this: http://catb.org/~esr/writings/taoup/html/ch20s03.html#id3016155 http://catb.org/~esr/writings/taoup/html/ch20s03.html#id3016... And he's right, ioctl's can be quite tricky to operate sometimes.