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LDATTACH(8)                  System Administration                 LDATTACH(8)

NAME
       ldattach - attach a line discipline to a serial line
SYNOPSIS
       ldattach [-dhV78neo12] [-s speed] [-i iflag] 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 capa-
              bilities (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.
       -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.
SEE ALSO
       inputattach(1), ttys(4)
AUTHOR
       Tilman Schmidt (tilman AT imap.cc)
AVAILABILITY
       The ldattach command is part of the util-linux package and is available
       from ftp://ftp.kernel.org/pub/linux/utils/util-linux/.

util-linux                       February 2010                     LDATTACH(8)