Интерактивная система просмотра системных руководств (man-ов)
nmdm (4)
>> nmdm (4) ( FreeBSD man: Специальные файлы /dev/* )
BSD mandoc
NAME
nmdm
- nullmodem terminal driver
SYNOPSIS
device nmdm
DESCRIPTION
The
driver provides two
tty(4)
devices connected
by a virtual
``null modem''
cable.
If either of the two tty devices have the
CDSR_OFLOW
bit
(``stty dsrflow
''
)
set in their line discipline, the
device will emulate the speed configured in the
termios(4)
settings.
The speed emulation works independently in the two directions,
controlled by the slower end's termios settings
( c_ispeed , c_ospeedCS5 ... CS8 , CSTOPB
and
PARENB )
FILES
/dev/nmdm N [AB
]
nullmodem device nodes.
Where the
A
node has a matching
B
node.
The
driver implements
``on-demand device creation''
so simply accessing a given instance in
/dev
will create it.