| .\" Copyright 2008 Tilman Schmidt (tilman@imap.cc) |
| .\" May be distributed under the GNU General Public License version 2 or later |
| .TH LDATTACH 8 "14 January 2008" "Linux 2.6" "Linux Programmer's Manual" |
| .SH NAME |
| ldattach \- attach a line discipline to a serial line |
| .SH SYNOPSIS |
| .B ldattach |
| .RB [ \-dhV78neo12 ] |
| .RB [ \-s |
| .IR speed ] |
| .I ldisc device |
| .SH DESCRIPTION |
| The |
| .B ldattach |
| daemon opens the specified |
| .I device |
| file |
| (which should refer to a serial device) |
| and attaches the line discipline |
| .I 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 |
| .I ldisc |
| may be specified either by name |
| or by number. |
| |
| In order to detach the line discipline, |
| .BR kill (1) |
| the |
| .B ldattach |
| process. |
| |
| With no arguments, |
| .B ldattach |
| prints usage information. |
| .SH LINE DISCIPLINES |
| Depending on the kernel release, the following line disciplines are supported: |
| .TP |
| .BR TTY ( 0 ) |
| The default line discipline, |
| providing transparent operation (raw mode) |
| as well as the habitual terminal line editing capabilities (cooked mode). |
| .TP |
| .BR SLIP ( 1 ) |
| Serial Line IP (SLIP) protocol processor |
| for transmitting TCP/IP packets over serial lines. |
| .TP |
| .BR MOUSE ( 2 ) |
| Device driver for RS232 connected pointing devices (serial mice). |
| .TP |
| .BR PPP ( 3 ) |
| Point to Point Protocol (PPP) processor |
| for transmitting network packets over serial lines. |
| .TP |
| .BR STRIP ( 4 ) |
| .TP |
| .BR AX25 ( 5 ) |
| .TP |
| .BR X25 ( 6 ) |
| Line driver for transmitting X.25 packets over asynchronous serial lines. |
| .TP |
| .BR 6PACK ( 7 ) |
| .TP |
| .BR R3964 ( 9 ) |
| Driver for Simatic R3964 module. |
| .TP |
| .BR IRDA ( 11 ) |
| Linux IrDa (infrared data transmission) driver - |
| see http://irda.sourceforge.net/ |
| .TP |
| .BR HDLC ( 13 ) |
| Synchronous HDLC driver. |
| .TP |
| .BR SYNC_PPP ( 14 ) |
| Synchronous PPP driver. |
| .TP |
| .BR HCI ( 15 ) |
| Bluetooth HCI UART driver. |
| .TP |
| .BR GIGASET_M101 ( 16 ) |
| Driver for Siemens Gigaset M101 serial DECT adapter. |
| .TP |
| .BR PPS ( 18 ) |
| Driver for serial line Pulse Per Second (PPS) source. |
| .SH OPTIONS |
| .TP |
| \fB-d\fP | \fB--debug\fP |
| Causes |
| .B 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. |
| .TP |
| \fB-h\fP | \fB--help\fP |
| Prints a usage message and exits. |
| .TP |
| \fB-V\fP | \fB--version\fP |
| Prints the program version. |
| .TP |
| \fB-s\fP \fIvalue\fP | \fB--speed\fP \fIvalue\fP |
| Set the speed of the serial line to the specified value. |
| .TP |
| \fB-7\fP | \fB--sevenbits\fP |
| Sets the character size of the serial line to 7 bits. |
| .TP |
| \fB-8\fP | \fB--eightbits\fP |
| Sets the character size of the serial line to 8 bits. |
| .TP |
| \fB-n\fP | \fB--noparity\fP |
| Sets the parity of the serial line to none. |
| .TP |
| \fB-e\fP | \fB--evenparity\fP |
| Sets the parity of the serial line to even. |
| .TP |
| \fB-o\fP | \fB--oddparity\fP |
| Sets the parity of the serial line to odd. |
| .TP |
| \fB-1\fP | \fB--onestopbit\fP |
| Sets the number of stop bits of the serial line to one. |
| .TP |
| \fB-2\fP | \fB--twostopbits\fP |
| Sets the number of stop bits of the serial line to two. |
| .SH "SEE ALSO" |
| .BR inputattach (1), |
| .BR ttys (4) |
| .SH AUTHOR |
| .nf |
| Tilman Schmidt (tilman@imap.cc) |
| .fi |
| .SH AVAILABILITY |
| The ldattach command is part of the util-linux-ng package |
| and is available from |
| ftp://ftp.kernel.org/pub/linux/utils/util-linux-ng/. |
