12-04-2010
What did you try so far ?
Pls post your code, so we can help you to troubleshoot it then
This User Gave Thanks to ctsgnb For This Post:
9 More Discussions You Might Find Interesting
1. Post Here to Contact Site Administrators and Moderators
Hi,
I have a problem in pasting a url in the thread. I tried many a times and i keep failing.
Can u tell me what's wrong?
I go by the instructions that appear after clicking the http:// but still i fail. The link does not appear properly in the threads that i post.
Thanks,
Nisha (3 Replies)
Discussion started by: Nisha
3 Replies
2. UNIX for Dummies Questions & Answers
Hi,
I would be very happy if someone could help me please. I am relatively new to UNIX, and still learning.
My understanding of things are:
Say I have a PC running Windows. This machine has a name. If I have 10 PC's, then I have 10 names, one for each PC. Each PC is independent of the other.... (4 Replies)
Discussion started by: ALon
4 Replies
3. UNIX for Dummies Questions & Answers
Hi
I am trying to set up two hosts in a reverse proxy. The reverse proxy already has 8 servers running perfectly, but they are all simply mapping pure addresses, which I have registered internally and externally.
The latest two I wish to add are a bit different, they are app servers, one... (1 Reply)
Discussion started by: rboekdrukker
1 Replies
4. Shell Programming and Scripting
Hi,
I am trying to upload a file to a SQL database table. The column type is IMAGE. I am looking for a solution to upload a word doc file. I tried 3 approaches.
1) my $fileToStore = "mytest.doc";
open IPFILE, "<", $name;
binmode IPFILE;
while (<IPFILE>)
{
$fileToStore .= $_;
}
close... (1 Reply)
Discussion started by: b.paramanatti
1 Replies
5. Shell Programming and Scripting
a file containing following data (part of it)....
1907594 201012 31 11
5837737 201012 41 18
257402.88 201101 31 11
7500 201101 33 1
115618.5 201101 41 11
556330 201102 31 12
481783.5 201102 41 20
2827732.13 201103 31 71
85253 201103 33 2
4479588.07 201103 41 90
7120 201104 21 1
... (4 Replies)
Discussion started by: guptam
4 Replies
6. Shell Programming and Scripting
hello folks,
i am stuck with this awk command. i need to calculate the sum of a column of values on a flatfile and i am using the following command :
awk -F"|" '{x += $10} END {print "Sum: "x}' standard_csv_file1.out
that flatfile contains 180 fields and i am getting the... (5 Replies)
Discussion started by: jdsony
5 Replies
7. Shell Programming and Scripting
Hi,
I have used the following command to get result using some program and got desired output but I am unable to understand the last part: sort -k5,5 -rn|head -n 10
grep Centre groups.dat |sort -k5,5 -rn|head -n 10
Please guide.
Thanks (2 Replies)
Discussion started by: bioinfo
2 Replies
8. UNIX for Dummies Questions & Answers
Hi ,
i have a shell script with the first two lines as
#! /bin/ksh
set -x
when i try opening the file from unix using the command 'sh filename.sh' , i am getting the below error :
invalid optionline 2: set: -
Pls help
Use code tags for you code and data... (1 Reply)
Discussion started by: Rajankum
1 Replies
9. Shell Programming and Scripting
I have not been able to append the contents of many files into one file. I have executed the CAT command shown below separately substituting an actual path and file name for the array variable to verify that I have the syntax correct. The bottom line - nothing is happening with CAT. I am running... (16 Replies)
Discussion started by: demmith
16 Replies
LEARN ABOUT DEBIAN
io::async::loop::select
IO::Async::Loop::Select(3pm) User Contributed Perl Documentation IO::Async::Loop::Select(3pm)
NAME
"IO::Async::Loop::Select" - use "IO::Async" with "select(2)"
SYNOPSIS
Normally an instance of this class would not be directly constructed by a program. It may however, be useful for runinng IO::Async with an
existing program already using a "select" call.
use IO::Async::Loop::Select;
my $loop = IO::Async::Loop::Select->new;
$loop->add( ... );
while(1) {
my ( $rvec, $wvec, $evec ) = ('') x 3;
my $timeout;
$loop->pre_select( $rvec, $wvec, $evec, $timeout );
...
my $ret = select( $rvec, $wvec, $evec, $timeout );
...
$loop->post_select( $rvec, $evec, $wvec );
}
DESCRIPTION
This subclass of "IO::Async::Loop" uses the select(2) syscall to perform read-ready and write-ready tests.
To integrate with an existing "select"-based event loop, a pair of methods "pre_select" and "post_select" can be called immediately before
and after a "select" call. The relevant bits in the read-ready, write-ready and exceptional-state bitvectors are set by the "pre_select"
method, and tested by the "post_select" method to pick which event callbacks to invoke.
CONSTRUCTOR
$loop = IO::Async::Loop::Select->new
This function returns a new instance of a "IO::Async::Loop::Select" object. It takes no special arguments.
METHODS
$loop->pre_select( $readvec, $writevec, $exceptvec, $timeout )
This method prepares the bitvectors for a "select" call, setting the bits that the Loop is interested in. It will also adjust the $timeout
value if appropriate, reducing it if the next event timeout the Loop requires is sooner than the current value.
$readvec
$writevec
$exceptvec
Scalar references to the reading, writing and exception bitvectors
$timeout
Scalar reference to the timeout value
$loop->post_select( $readvec, $writevec, $exceptvec )
This method checks the returned bitvectors from a "select" call, and calls any of the callbacks that are appropriate.
$readvec
$writevec
$exceptvec
Scalars containing the read-ready, write-ready and exception bitvectors
$count = $loop->loop_once( $timeout )
This method calls the "pre_select" method to prepare the bitvectors for a "select" syscall, performs it, then calls "post_select" to
process the result. It returns the total number of callbacks invoked by the "post_select" method, or "undef" if the underlying select(2)
syscall returned an error.
SEE ALSO
o IO::Select - OO interface to select system call
AUTHOR
Paul Evans <leonerd@leonerd.org.uk>
perl v5.14.2 2012-10-24 IO::Async::Loop::Select(3pm)