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NAME | SYNOPSIS | DESCRIPTION | LINE DISCIPLINES | OPTIONS | SEE ALSO | AUTHOR | AVAILABILITY | COLOPHON |
LDATTACH(8) System Administration LDATTACH(8)
ldattach - attach a line discipline to a serial line
ldattach [-1278denoVh] [-i iflag] [-s speed] ldisc device
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.
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.
GSM0710(21)
Driver for GSM 07.10 multiplexing protocol modem (CMUX).
-1, --onestopbit
Set the number of stop bits of the serial line to one.
-2, --twostopbits
Set the number of stop bits of the serial line to two.
-7, --sevenbits
Set the character size of the serial line to 7 bits.
-8, --eightbits
Set the character size of the serial line to 8 bits.
-d, --debug
Keep ldattach in the foreground so that it can be interrupted
or debugged, and to print verbose messages about its progress
to standard error output.
-e, --evenparity
Set the parity of the serial line to even.
-i, --iflag [-]value...
Set the specified bits in the c_iflag word of the serial line.
The given value may be a number or a symbolic name. If value
is prefixed by a minus sign, the specified bits are cleared
instead. Several comma-separated values may be given in order
to set and clear multiple bits.
-n, --noparity
Set the parity of the serial line to none.
-o, --oddparity
Set the parity of the serial line to odd.
-s, --speed value
Set the speed (the baud rate) of the serial line to the
specified value.
-c, --intro-command string
Define an intro command that is sent through the serial line
before the invocation of ldattach. E.g. in conjunction with
line discipline GSM0710, the command ´AT+CMUX=0\r´ is commonly
suitable to switch the modem into the CMUX mode.
-p, --pause value
Sleep for value seconds before the invocation of ldattach.
Default is one second.
-V, --version
Display version information and exit.
-h, --help
Display help text and exit.
inputattach(1), ttys(4)
Tilman Schmidt (tilman@imap.cc)
The ldattach command is part of the util-linux package and is
available from https://www.kernel.org/pub/linux/utils/util-linux/.
This page is part of the util-linux (a random collection of Linux
utilities) project. Information about the project can be found at
⟨https://www.kernel.org/pub/linux/utils/util-linux/⟩. If you have a
bug report for this manual page, send it to
util-linux@vger.kernel.org. This page was obtained from the
project's upstream Git repository
⟨git://git.kernel.org/pub/scm/utils/util-linux/util-linux.git⟩ on
2017-07-05. If you discover any rendering problems in this HTML ver‐
sion of the page, or you believe there is a better or more up-to-date
source for the page, or you have corrections or improvements to the
information in this COLOPHON (which is not part of the original man‐
ual page), send a mail to man-pages@man7.org
util-linux July 2014 LDATTACH(8)