On Wed, 13 Sep 2006, Thilo Riessner wrote:
The program needs one device for reading and writing. Therefore the /dev/stdin
and /dev/stdout is not usable. Or do I get something wrong there?
???? reading=/dev/stdin, writing=/dev/stdout. ???
Also a device or whatever can in general be opened for both reading and
writing.
Use the files /dev/stdin and /dev/stdout
On Thu, 2006-09-07 at 16:44 +0200, Thilo Riessner wrote:
Am Mittwoch, 6. September 2006 23:53 schrieben Sie:
Thilo Riessner writes:
From a program called by the welcome script which tries to access
the serial
port (in this case /dev/ttyI0) I get the errormessage:
Port or socket open error!
I guess, that the serial port is blocked by the pppd.
Is there any possibility to access the serial port nevertheless?
You shouldn't be trying to access the port directly. Instead, when
the "welcome" script runs, your script's standard input and standard
output are connected directly to the tty.
You should be able to use 'read' and 'echo' (or whatever your
scripting language supports) without having to open anything.
This is true for "connect", "disconnect", "init", and "pty" as well.
Thanks for your hint, but I have the problem, that the program (which is
a binary program) I am running out of my welcome script (which is a bash
script) does not support the usage of stdin and stdout, but it demands
the usage of a device for reading and writing. Is there a trick that I
could use in the welcome script to redirect stdin and stdout to a
"device" and use that device in the program, which is called from the
welcome script. -
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