NAME
ldattach - attach a line discipline to a serial line
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/.