In my script I use the cat and echo commands like this:
Code:
cat $DEVICE > $LOG &
echo -e "sth" > $DEVICE
And I want to use exec instead, but I have no idea how can I capture the device to the log and printf to the same descriptor. I need the capturing of the modem to check (by grep) if there is any OK response or for example the CONNECT response.
Last edited by krustowski; 06-29-2017 at 08:51 AM..
Hi everyone
I am having some real difficulties getting a dial in modem to work on one of my HP boxes. It's a mux modem on port 7 which I have set up at 9600 baud.
I can dial in, the handshakes are completed, but then it returns incoherent characters on the emulation screen. I think my dial in... (1 Reply)
I've spent enough time trying to put on work Lucent Winmodem in my armada M300 (compaq laptop) I use Mandrake 8.0 but as soon as i get connected
and prompmts appears modem shutsdown.
Does any one had a similar situation, solved it?
cheers (2 Replies)
Hi!
I have a little prob with dialing up to the internet... When I try connect, it says "Sorry, modem is busy"...
Specs:
Laptop
56K modem
Slackware 8.0
Kernel 2.4.5
Cheers;) (4 Replies)
Specs:
Dlink DFE-560EL external modem.
RedHat 7.1
How do you turn off the modem volume? I am getting annoyed of it beeping everytime I use it but there is no switch on the hardware to tune down the volume.
I have tried using minicom and use the following commands:
ATL0
ATM0
Next, I... (2 Replies)
Pleaseee... Helpppp.... !!!
I am using SCO Open Server 5.05. Recently, i have upgraded the system which means transfer all apps and data to the new system. Everything work well except one thing. On my old system i have an external modem which to dial out. Now that i use the same modem on... (4 Replies)
I have got Suse 8.0 by using a modem (US Robotics 56K Faxmodem Ext).
During connection i got the error 16. I tried it under RedHat and Mandrake too.....same problem. What can i do ?
Thanx...a lot...
Logfile:
SuSE Meta pppd (smpppd), Version 0.73 on zuhause.
wwwoffle not is running ... (1 Reply)
Ok. I tried following the directions from some of the other threads, but I've hit a road block.
I have red hat 7.3 and I installed the hcf package:
hcfpcimodem-0.99lnxtbeta03042700k2.4.18_3-1rh.i386.rpm
It installed ok, no errors, but I still can't get linux to find my modem. I've tried... (2 Replies)
Hi all,
Is there any difference between a null modem cable or a modem cable ?
i assume that a null modem cable is a normal cable that i used from cpu serial ports to a modem for dialup.
please correct if i am wrong,
thks (2 Replies)
Hi, my first Sco question so go easy!
We have a customer who is on Sco v5.0.2. We are attempting to talk a consultant on site through how to configure the MODEM in scoadmin. Unfortunately the MODEM install instructions that we work from only work for v5.0.4 and assume that scoadmin has an option... (1 Reply)
hi folks,
i am looking for a analog modem to use it with a solaris9 sparc mashine. as far as i know, solaris communicates with the modem using AT-commands. so do i need a special modem for solaris or just a modem? i am open for everything. PCI-modem, seriell modem, usb modem. what are you using? i... (1 Reply)
Discussion started by: pressy
1 Replies
LEARN ABOUT CENTOS
unbuffer
UNBUFFER(1) General Commands Manual UNBUFFER(1)NAME
unbuffer - unbuffer output
SYNOPSIS
unbuffer program [ args ]
INTRODUCTION
unbuffer disables the output buffering that occurs when program output is redirected from non-interactive programs. For example, suppose
you are watching the output from a fifo by running it through od and then more.
od -c /tmp/fifo | more
You will not see anything until a full page of output has been produced.
You can disable this automatic buffering as follows:
unbuffer od -c /tmp/fifo | more
Normally, unbuffer does not read from stdin. This simplifies use of unbuffer in some situations. To use unbuffer in a pipeline, use the
-p flag. Example:
process1 | unbuffer -p process2 | process3
CAVEATS
unbuffer -p may appear to work incorrectly if a process feeding input to unbuffer exits. Consider:
process1 | unbuffer -p process2 | process3
If process1 exits, process2 may not yet have finished. It is impossible for unbuffer to know long to wait for process2 and process2 may
not ever finish, for example, if it is a filter. For expediency, unbuffer simply exits when it encounters an EOF from either its input or
process2.
In order to have a version of unbuffer that worked in all situations, an oracle would be necessary. If you want an application-specific
solution, workarounds or hand-coded Expect may be more suitable. For example, the following example shows how to allow grep to finish pro-
cessing when the cat before it finishes first. Using cat to feed grep would never require unbuffer in real life. It is merely a place-
holder for some imaginary process that may or may not finish. Similarly, the final cat at the end of the pipeline is also a placeholder
for another process.
$ cat /tmp/abcdef.log | grep abc | cat
abcdef
xxxabc defxxx
$ cat /tmp/abcdef.log | unbuffer grep abc | cat
$ (cat /tmp/abcdef.log ; sleep 1) | unbuffer grep abc | cat
abcdef
xxxabc defxxx
$
BUGS
The man page is longer than the program.
SEE ALSO
"Exploring Expect: A Tcl-Based Toolkit for Automating Interactive Programs" by Don Libes, O'Reilly and Associates, January 1995.
AUTHOR
Don Libes, National Institute of Standards and Technology
1 June 1994 UNBUFFER(1)