i have an external device sending serial messages i want to connect this device to a serial port in my sun blade box and record those messages to a file, how can i read the serial port and write it to file?
Thanks (4 Replies)
Hi there,
It's pretty hard for me to explain my problem because I'm affraid I'm not using the correct vocabulary. So let me describe the situation. I wrote a script that has one argument. It works like this:
~$ cat /usr/local/bin/squote
echo "$@" | sed 's/'\''/'\''\\'\'\''/g; s/.*/'\''&'\''/g'... (2 Replies)
HI ,
I have a list1 which consists of data that i have to search and a list2 which has the files that need to be searched .So basically i am using list1 on list2 to see if list1 data is present if found replace it .I have written the code using foreach loop for each list .This is taking the... (1 Reply)
Q. Write a script that behaves both in interactive and non interactive mode. When no arguments are supplied it picks up each C program from the directory and prints first 10 lines.
It then prompts for deletion of the file.
If user supplies arguments with the script , then it works on those files... (1 Reply)
Q. Write a script that behaves both in interactive and non interactive mode. When no arguments are supplied it picks up each C program from the directory and prints first 10 lines.
It then prompts for deletion of the file.
If user supplies arguments with the script , then it works on those files... (8 Replies)
Hi,
I am trying to automate the killing of named processes of which I found a good solution here on the forums but as I am pretty much a begginer to linux I am having an issue. The code I found is:
kill $(ps -ef | nawk '/monitoreo start/ { print $2}'}
but what I want to do is replace... (3 Replies)
Hi UNIX Gurus,
I have a SQL utility which fires DML statements against DB2 tables. Logic is to identify DML statements, put it into a file ($dml) and execute the job.
DML file can have more than 1 DML statements....but all of 1 type at a time.....either all UPDATE or all DELETE.
Job first... (2 Replies)
Hi. I wanted to create a Perl script which can take the outputs of a Perl script as it's input and temporarily store them in a document. Need help.
Thanks.:) (8 Replies)
Need a bash script that will ask the user: Which Files Would you like to copy?
Then the user would input the filenames (space seperated, all lowercase)
The script would then cp each file to /data/backup/ and also wc the files to std output. (to see how many lines each file has)
Should go... (5 Replies)
Hi
I am trying to pass 2 input parameters from shell script to python API end point ,but not passing what i expected when print those inputs .Please advise
data.txt
" 7554317" ,xx5e1
" 7554317" ,xx96
" 7554317" ,xxd6
" 554317" ,xde
cat $sites/data.txt |sort |uniq >$sites/a.txt... (5 Replies)
Discussion started by: akil
5 Replies
LEARN ABOUT DEBIAN
io::pipe
IO::Pipe(3perl) Perl Programmers Reference Guide IO::Pipe(3perl)NAME
IO::Pipe - supply object methods for pipes
SYNOPSIS
use IO::Pipe;
$pipe = IO::Pipe->new();
if($pid = fork()) { # Parent
$pipe->reader();
while(<$pipe>) {
...
}
}
elsif(defined $pid) { # Child
$pipe->writer();
print $pipe ...
}
or
$pipe = IO::Pipe->new();
$pipe->reader(qw(ls -l));
while(<$pipe>) {
...
}
DESCRIPTION
"IO::Pipe" provides an interface to creating pipes between processes.
CONSTRUCTOR
new ( [READER, WRITER] )
Creates an "IO::Pipe", which is a reference to a newly created symbol (see the "Symbol" package). "IO::Pipe::new" optionally takes two
arguments, which should be objects blessed into "IO::Handle", or a subclass thereof. These two objects will be used for the system call
to "pipe". If no arguments are given then method "handles" is called on the new "IO::Pipe" object.
These two handles are held in the array part of the GLOB until either "reader" or "writer" is called.
METHODS
reader ([ARGS])
The object is re-blessed into a sub-class of "IO::Handle", and becomes a handle at the reading end of the pipe. If "ARGS" are given
then "fork" is called and "ARGS" are passed to exec.
writer ([ARGS])
The object is re-blessed into a sub-class of "IO::Handle", and becomes a handle at the writing end of the pipe. If "ARGS" are given
then "fork" is called and "ARGS" are passed to exec.
handles ()
This method is called during construction by "IO::Pipe::new" on the newly created "IO::Pipe" object. It returns an array of two objects
blessed into "IO::Pipe::End", or a subclass thereof.
SEE ALSO
IO::Handle
AUTHOR
Graham Barr. Currently maintained by the Perl Porters. Please report all bugs to <perl5-porters@perl.org>.
COPYRIGHT
Copyright (c) 1996-8 Graham Barr <gbarr@pobox.com>. All rights reserved. This program is free software; you can redistribute it and/or
modify it under the same terms as Perl itself.
perl v5.14.2 2011-09-19 IO::Pipe(3perl)