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ldattach — attach a line discipline to a serial line
ldattach [−dhV78neo12] [ −s speed ] [ −i iflag ] 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.
−d | −−debugCauses 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 | −−helpDisplay help text and exit.
−V | −−versionDisplay version information and exit.
−s value | −−speed valueSet the speed of the serial line to the specified value.
−−sevenbitsSets the character size of the serial line to 7 bits.
−−eightbitsSets the character size of the serial line to 8 bits.
−n | −−noparitySets the parity of the serial line to none.
−e | −−evenparitySets the parity of the serial line to even.
−o | −−oddparitySets the parity of the serial line to odd.
−−onestopbitSets the number of stop bits of the serial line to one.
−−twostopbitsSets 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.