Hi, Guys ...
I want to know how to use to 2 processes (A & B) communicating with each others through 2 pipes (Pipe1 & Pinpe2) :
such that process A write to Pipe1 and Process B read from Pipe1
and process B write to Pipe2 and Process A read from Pipe2 .
Does anyone have an idea about... (1 Reply)
I'd like to make a script that I can execute every time I sign on to my linux box that keeps track of the time and allows to me to add a remark to a file. So basically once I log in, I run the script, and it outputs the date and time to a text file (log.txt). But that isn't my problem.
I need... (1 Reply)
I am using system running on red hat linux 4.
I had connected health measuring machine to the serial port and configured it
stty -F /dev/ttyS0 9600 -parenb cs8 -cstopb
this machine requires a command to be passed to it for giving output. I am unable to pass command hexa format(0x68) to the... (4 Replies)
Hello,
I would like to know if it is possible to communicate between two terminals on seperate computers for free - e.g. not using proprietary software or using the built in UNIX terminals on operating systems of the UNIX flavor.
Thanks,
photray94 (2 Replies)
i want to know that my serial port ( pci slot with 2 port ) is working fine and communicating
is there any way to know the serialport is working and communicating?
please help (3 Replies)
Hello!
I am working on an application which reads environmental instruments which have serial ports. The application requires a serial port to be present to talk to the device (i.e. /dev/ttyS0 ). In some instances the environmental devices will be 100's of yards away from the computer, so a... (5 Replies)
$./a.out smtp.gmail.com 25
220 mx.google.com ESMTP 9sm2923369yxf.23
250 mx.google.com at your service
220 2.0.0 Ready to start TLS
after handshake
Common Name: smtp.gmail.com
after get cert dn
-----BEGIN SSL SESSION PARAMETERS-----... (0 Replies)
This is my situation
DOS pc serial cable (sl0) Linux Pc eth1
192.168.0.10 <-------------------->192.168.0.2 <------------>192.168.0.1 (router)
I connected the linux pc and the dos pc with a SLIP (serial line internet protocol), so they can communicate in the sl0 interface.
... (3 Replies)
I have a simple client/server program I am using for learning purposes.
I have it setup so that after server is setup and listening it than goes into a loop where it accepts incoming client connections. After each connection, the client socket is than passed to a thread routine where it can be... (3 Replies)
Hi there,
I have a Debian server (192.168.1.1) connected through ethernet to a RS232 device servers (192.168.1.5) that is then connected through RS232 to a Video Projector.
The idea is that I want to send commands to the video projector (eg. turn on/off) via the device server.
According to... (4 Replies)
Discussion started by: chebarbudo
4 Replies
LEARN ABOUT V7
ldattach
LDATTACH(8) System Administration LDATTACH(8)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.
GSM0710(21)
Driver for GSM 07.10 multiplexing protocol modem (CMUX).
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 stan-
dard 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 disci-
pline GSM0710, the command 'AT+CMUX=0
' 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.
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 https://www.kernel.org/pub/linux/utils/util-linux/.
util-linux July 2014 LDATTACH(8)