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Message-ID: <489C15D6.7050501@gmail.com>
Date: Fri, 08 Aug 2008 12:45:58 +0300
From: Alexandr Ogurtsov <iscander.alt@gmail.com>
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Subject: [Sysadmins] Pseudo nulmodem device for Linux
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Уважаемые коллеги, возможно кто то уже сталкивался.
Интересует есть ли в Linux аналог pseudo nulmodem device типа того что
организуется в BSD  средствами nmdm модуля. Цель - отладка программного
обеспечения общающегося между клиент серверной частью посредством
последовательного порта.  Или же при отсутвии драйвера как возможно
эмулировать для процессов наличие виртуальных последовательных портов
связаных между собой?
Позволю себе процетировать BSD man чтоб прояснить ситуацию чего
собственно хочется:
BSD mandoс:
NAME
nmdm
 - nullmodem terminal driver

SYNOPSIS
device nmdm 
DESCRIPTION
The driver provides support for a device-pair termed a null modem pair A
null modem pair is a pair of character devices. Each device provides to
a process an interface identical to that described in tty(4). However,
whereas most other devices which provide the interface described in
tty(4) have a hardware device of some sort behind them, the device has,
instead, another process manipulating it through the other half of the
pair. That is, anything written on the first device is given to the
second device as input and anything written on the second device is
presented as input on the first device. 
FILES
/dev/nmdm N [AB ]
    nullmodem device nodes. Where the A node has a matching B node.