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Man Pages


Manual Reference Pages  -  LDATTACH (8)

NAME

ldattach - attach a line discipline to a serial line

CONTENTS

Synopsis
Description
Line Disciplines
Options
Author
Availability

SYNOPSIS

ldattach [-dhV78neo12] [-s speed] ldisc device

DESCRIPTION

The ldattach daemon opens the specified device file (which should refer to a serial device) and attaches the line discipline ldisc to it for processing of the sent and/or received data. It then goes into the background keeping the device open so that the line discipline stays loaded.

The line discipline ldisc may be specified either by name or by number.

In order to detach the line discipline, kill(1) the ldattach process.

With no arguments, ldattach prints usage information.

LINE DISCIPLINES

Depending on the kernel release, the following line disciplines are supported:
TTY(0)
  The default line discipline, providing transparent operation (raw mode) as well as the habitual terminal line editing capabilities (cooked mode).
SLIP(1)
  Serial Line IP (SLIP) protocol processor for transmitting TCP/IP packets over serial lines.
MOUSE(2)
  Device driver for RS232 connected pointing devices (serial mice).
PPP(3)
  Point to Point Protocol (PPP) processor for transmitting network packets over serial lines.
STRIP(4)
AX25(5)
X25(6)
  Line driver for transmitting X.25 packets over asynchronous serial lines.
6PACK(7)
R3964(9)
  Driver for Simatic R3964 module.
IRDA(11)
  Linux IrDa (infrared data transmission) driver - see http://irda.sourceforge.net/
HDLC(13)
  Synchronous HDLC driver.
SYNC_PPP(14)
  Synchronous PPP driver.
HCI(15)
  Bluetooth HCI UART driver.
GIGASET_M101(16)
  Driver for Siemens Gigaset M101 serial DECT adapter.
PPS(18)
  Driver for serial line Pulse Per Second (PPS) source.

OPTIONS

-d | --debug
  Causes ldattach to stay in the foreground so that it can be interrupted or debugged, and to print verbose messages about its progress to the standard error output.
-h | --help
  Prints a usage message and exits.
-V | --version
  Prints the program version.
-s value | --speed value
  Set the speed of the serial line to the specified value.
-7 | --sevenbits
  Sets the character size of the serial line to 7 bits.
-8 | --eightbits
  Sets the character size of the serial line to 8 bits.
-n | --noparity
  Sets the parity of the serial line to none.
-e | --evenparity
  Sets the parity of the serial line to even.
-o | --oddparity
  Sets the parity of the serial line to odd.
-1 | --onestopbit
  Sets the number of stop bits of the serial line to one.
-2 | --twostopbits
  Sets the number of stop bits of the serial line to two.

SEE ALSO

inputattach(1), ttys(4)

AUTHOR

Tilman Schmidt (tilman@imap.cc)

AVAILABILITY

The ldattach command is part of the util-linux-ng package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux-ng/.
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Linux 2.6 LDATTACH (8) 14 January 2008

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