This isn't really a unix question, or even a programming question, but I hope you guys can help. I want to create a program to control the electricity on a model railway.
I have created the program to that it sends characters over the serial cable, but now I need to do the switch that will... (1 Reply)
Earlier I posted a question regarding this issue. I managed to go a step further. Anyway, this is another similar question
Write a programme that creates a ring of three processes connected by pipes. The first process should prompt the user for a string and then send it to the second process .... (2 Replies)
I have serial modem connection between two computers. We have to login the remote computer through ip address. How can I get the ip address in this connection? (1 Reply)
HI ALL,
I have been trying to install a particular software using remote linux server.
some thing like this:
rsh <host ID> /usr/sbin/swinstall -x autoreboot=true -s /tmp/<software> <Product name>.
The problem is whenever I try to install the product through a shell script the installation... (1 Reply)
hello
i'v two aix servers 4.3. last night the goes down becuse electrical f
problems.
when the servers comes up i've notice that file /unix is gone. i've fix it and the problem fixed.
after few hours the same crash becuse elctrical problems.
file /unix is there , but now i've a... (0 Replies)
Hey GUys,
Once again I run in to problem and I am here for ur help.
I have two sun(solaris) box on company LAN.
One Unix Box is behind the firewall and the other one is Outside the firewall. The thing i need to do is
remote display a graphic on Unix box outside the firewall to the Unixbox... (5 Replies)
Hiya Everybody just joined,
Not sure if this is the right section:o
I require abit of an assistance with IPC!
I know there are different types of IPC porcesses like signals, semaphores, mutexes, shared memory, message queues, pipes and sockets.
Now say a system has a number of... (4 Replies)
Discussion started by: G.I.Joe
4 Replies
LEARN ABOUT SUSE
pts
PTS(4) Linux Programmer's Manual PTS(4)NAME
ptmx, pts - pseudo-terminal master and slave
DESCRIPTION
The file /dev/ptmx is a character file with major number 5 and minor number 2, usually of mode 0666 and owner.group of root.root. It is
used to create a pseudo-terminal master and slave pair.
When a process opens /dev/ptmx, it gets a file descriptor for a pseudo-terminal master (PTM), and a pseudo-terminal slave (PTS) device is
created in the /dev/pts directory. Each file descriptor obtained by opening /dev/ptmx is an independent PTM with its own associated PTS,
whose path can be found by passing the descriptor to ptsname(3).
Before opening the pseudo-terminal slave, you must pass the master's file descriptor to grantpt(3) and unlockpt(3).
Once both the pseudo-terminal master and slave are open, the slave provides processes with an interface that is identical to that of a real
terminal.
Data written to the slave is presented on the master descriptor as input. Data written to the master is presented to the slave as input.
In practice, pseudo-terminals are used for implementing terminal emulators such as xterm(1), in which data read from the pseudo-terminal
master is interpreted by the application in the same way a real terminal would interpret the data, and for implementing remote-login pro-
grams such as sshd(8), in which data read from the pseudo-terminal master is sent across the network to a client program that is connected
to a terminal or terminal emulator.
Pseudo-terminals can also be used to send input to programs that normally refuse to read input from pipes (such as su(1), and passwd(1)).
FILES
/dev/ptmx, /dev/pts/*
NOTES
The Linux support for the above (known as Unix98 pty naming) is done using the devpts file system, that should be mounted on /dev/pts.
Before this Unix98 scheme, master ptys were called /dev/ptyp0, ... and slave ptys /dev/ttyp0, ... and one needed lots of preallocated
device nodes.
SEE ALSO getpt(3), grantpt(3), ptsname(3), unlockpt(3), pty(7)COLOPHON
This page is part of release 3.25 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
Linux 2002-10-09 PTS(4)