1. If you are running a command from perl why don`t you open file directly and do it with perl OPEN function?
2. while you are running the command you need to escape $ & " in command line, those are intended to be used on command line. When you use the command this way your running program is replacing those values! also ' " ' is completing the statement in mid way.
Hi all,
I need to know what command/s I can use to print lines from a file. I cannot do pattern matching, so grepping for a string is not possible. I'd like to say "print line 3" etc. Any ideas? Ta. (2 Replies)
I am trying to insert a line with a date stamp in a file that is used to monitor activity in one of our directories. By doing this, I want to grep that file each day and go to the last entry for each time a error occurred and pull all errors generated if any exist. If error exists I want that error... (3 Replies)
Dear All,
I have a file called football where i have a list of 11 players each on different lines.
I wish to add a name of another player on the first line.
I have created a file called footballscript in vi writing the following sed command to achieve this ...
cat football | sed -e '1 i\... (4 Replies)
Hi,
I have two files--
file1-
file2:-
i have to compare two files and where the uid is same i have to take the password and insert it above the telephone number.
the output should be like this--
uid : 1418 common so insert the password thbs above the line telephonenumber. (2 Replies)
I'm sure you guys have answered this elsewhere but I can't seem to find where so here goes.
#!/bin/bash
n=120
a=$(sed '120q;d' energy.xvg)
while ;do
a=$(sed $n'q;d' energy.xvg)
echo "$a \n" > newfile
n=$(($n+100))
done
exit 0
that script should read the file energy.xvg, start at... (1 Reply)
I need a perl script to find and replace a specific pattern in a file to a new line.
BAsically I have a single line data in a file with 10 mb to 200 MB. I want to put a new line based on a specific pattern to open the file in Excel / Access.
Following is the sample data in a file
... (1 Reply)
I have posted it previously but somehow could not delete the previous post.I felt i could not explain the problem statement well.
Here t goes.I have a file say File1. Now i need a specific pattern from the lines to be added to the other line.
File:
red blue green ABC.txt@ABC END
black... (1 Reply)
Hi,
I have this line:
ip=111.222.133.144,mac=00:16:3E:2A:08:3C,vifname=veth360','ip=10.2.3.4,vifname=veth360a'
^
|
-------
I want to insert this IP 144.133.222.111 between "144"... (4 Replies)
Friends ,
I have a large file and i need to insert a line after every line.I am actually unaware how to do it.Any help appreciated.
My File
control station *ATM* , qread $OSS.Jul13A.FI01 interval 1 intcount 1
control station *ATM* , qread $OSS.Jul13A.FI02 interval 1 intcount... (4 Replies)
Hi,
consider a file called mobile.txt as follows:
For type lovers, add a new line at the end of it by copying its previous line and add a +1 to the field1, field2
Additionally, there are only 3 plans available to lovers type, so it should not work for lovers type already having 3 lines under... (11 Replies)
Discussion started by: Gautham
11 Replies
LEARN ABOUT DEBIAN
io::async::protocol::linestream
IO::Async::Protocol::LineStream(3pm) User Contributed Perl Documentation IO::Async::Protocol::LineStream(3pm)NAME
"IO::Async::Protocol::LineStream" - stream-based protocols using lines of text
SYNOPSIS
Most likely this class will be subclassed to implement a particular network protocol.
package Net::Async::HelloWorld;
use strict;
use warnings;
use base qw( IO::Async::Protocol::LineStream );
sub on_read_line
{
my $self = shift;
my ( $line ) = @_;
if( $line =~ m/^HELLO (.*)/ ) {
my $name = $1;
$self->invoke_event( on_hello => $name );
}
}
sub send_hello
{
my $self = shift;
my ( $name ) = @_;
$self->write_line( "HELLO $name" );
}
This small example elides such details as error handling, which a real protocol implementation would be likely to contain.
DESCRIPTION EVENTS
The following events are invoked, either using subclass methods or CODE references in parameters:
on_read_line $line
Invoked when a new complete line of input is received.
PARAMETERS
The following named parameters may be passed to "new" or "configure":
on_read_line => CODE
CODE reference for the "on_read_line" event.
METHODS
$lineprotocol->write_line( $text )
Writes a line of text to the transport stream. The text will have the end-of-line marker appended to it; $text should not end with it.
AUTHOR
Paul Evans <leonerd@leonerd.org.uk>
perl v5.14.2 2012-10-24 IO::Async::Protocol::LineStream(3pm)