ldattach
attach a line discipline to a serial line
see also :
inputattach
Synopsis
ldattach
[-dhV78neo12] [-s speed]
[-i iflag] ldisc device
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examples
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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.
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.
-i value |
--iflag [-]value{,...}
Sets the specified bits in the
c_iflag word of the serial line. Value may be a
number or a symbolic name. If value is prefixed by a
minus sign, clear the specified bits instead. Several comma
separated values may be given in order to set and
clear multiple bits.
availability
The ldattach command is part of the util-linux package and is
available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/.
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.
see also
inputattach ,
ttys
author
Tilman Schmidt
(tilman[:at:]imap[:dot:]cc)