Date: Fri, 1 Sep 1995 12:47:16 -0500 (CDT) From: peter@nmti.com (Peter da Silva) To: jgreco@brasil.moneng.mei.com (Joe Greco) Subject: Re: Gritching about XFree86 and serial port naming Message-ID: <9509011747.AA26461@sonic.nmti.com.nmti.com> In-Reply-To: <199509011637.LAA09120@brasil.moneng.mei.com> from "Joe Greco" at Sep 1, 95 11:37:33 am
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> > tty[a-?][0-9a-z] for callout
> > tty[A-?][0-9A-Z] for callin
> Why use tty for callout? You are killing the potential ranges of tty names.
Huh? Got the same number of tty devices as the current scheme.
Personally I prefer
tty[a-?]{0,1,2,3,4,5,6,7,8,9,10,...}
tty[a-?]{0,1,2,3,4,5,6,7,8,9,10,...}.cu
tty[a-?]{0,1,2,3,4,5,6,7,8,9,10,...}.ctl
tty[a-?]{0,1,2,3,4,5,6,7,8,9,10,...}.lck
And increasing the width of the fields in ps and so on.
> It's also not quite as immediately obvious that "ttyBZ" and "ttybz" are
> paired, and which one plays which role.
It's obvious they're paired. Which plays which role is less obvious, I agree.
tty[0-9a-oA-Z][0-9a-z]{,.cu,.ctl,.lck}
would be cleaner, anyway.
> "ttybz" and "cuabz" seems more intuitive to me...
Just so long as it's the same "bz".
> Part of what we should be thinking of, IMHO, is how people manage these
> large numbers of ports, and work the naming scheme around that. As I said,
> I would really like to see cards done somehow on letter boundaries such that
> I can simply label a breakout box as "tty2*" and if an operator should come
> looking for a malfunctioning line, they don't need to come find me to
> decipher which box and which line "tty27" is. The people who are managing
> small numbers of serial ports really don't give a damn, but this would be
> very helpful to large installations!
The system our old modem server used was 3 digits, with multiple expansion
boxes on a baseband cable (not ethernet, but similar technology)
ttymXYZ
X = 0-7 card #
Y = 0-7 box #
Z = 0-7 or 0-F port #
Really, the System V naming schemes make more sense. If you had 20 fredport
boards, you could make it ttyf[0-j][0-9].
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