On Wed, 26 Apr 2000, Steve Cohen wrote:
> What is the difference between ttyS0 (capital S) and ttys0 (small
> s)? Both of these devices are present in the /dev directory in my
> Red Hat distribution. I know that ttyS0 is COM1 but what the heck
> is ttys0?
My first response to this was in error. Acording to
/usr/src/linux/Documentation/devices.txt, the psuedo tty's are
designated:
Pseudo-TTY masters
Type char
Major 2
Minor 0 = /dev/ptyp0 First PTY master
1 = /dev/ptyp1 Second PTY master
...
255 = /dev/ptyef 256th PTY master
Pseudo-TTY slaves
Type char
Major 3
Minor 0 = /dev/ttyp0 First PTY slave
1 = /dev/ttyp1 Second PTY slave
...
256 = /dev/ttyef 256th PTY slave
Pseudo-tty's are named as follows:
* Masters are "pty", slaves are "tty";
* the fourth letter is one of pqrstuvwxyzabcde indicating
the 1st through 16th series of 16 pseudo-ttys each, and
* the fifth letter is one of 0123456789abcdef indicating
the position within the series.
Sorry to have misled you.
vern
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