NAME¶
ldattach - attach a line discipline to a serial line
SYNOPSIS¶
ldattach [
-1278denoVh] [
-i iflag] [
-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¶
- -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.
- -V, --version
- Display version information and exit.
- -h, --help
- Display help text and exit.
SEE ALSO¶
inputattach(1),
ttys(4)
AUTHOR¶
Tilman Schmidt (tilman@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/.
