I have a script which selects two 'sets' of system LVM device files from a tabular file 'mapfile' using awk :
LIVELV=`awk '{print($1)}' mapfile`
BCVLV=`awk '{print($3)}' mapfile`
I wanted to pass these 'sets' into an LVM command 'loop' along the lines of :
lvmerge $BCVLV $LIVELV
ie.... (3 Replies)
I'm a Linux newb, I've been running a Debian Linux server for about a year now, and I've written some simple scripts to automate various things, but I still don't know much, and I forget what I learn as fast as I figure it out... Anyway, that really isn't important, I just want you to know that... (14 Replies)
Hi ,
I am trying to write a script in kshell with while loop ,its like
count=1
count_cmp=1
while ; do
tail -$count tempfile | head -1 > tempstring
.......
done
However i get CIF.sh: line 33: '
I have checked thetrailing spaces , not sure what is... (4 Replies)
I'm having trouble with a simple piece of code.
IFS=,
echo "1,2,3,4,5,6,7,8" | while read x y
do
echo "x=$x"
echo "y=$y"
done
I'm hoping for
x=1
y=2
x=3
y=4
.
.
.
but I'm getting
x=1 (3 Replies)
Hi
Am trying to print the PIDs of process in a file and trying to grep any PID from that file
I set the if condition as $value != "PID" and $value != "-"
Assign that number to a variable
Am confused since am using while loop to read the line from file
and again if condition to check those... (2 Replies)
Hi,
I have two variables like below which will always be of the same size
a=1:2:3
b=A:B:C
I need to use a for/while loop that will have both the variables available. I cannot use an array here and will probably might iterate through the variable as echo $a | tr ':' '\n' and thus iterate... (5 Replies)
Hello,
I would like to ask for help with csh script.
An example of an input in .txt file is below, the number of lines varies from file to file and I have 2 or 3 columns with values. I would like to read all the values (probably one by one) and set them to independent unique variables that... (7 Replies)
hi,
i need a portion in a audit logging shell script where i have to loop thru multiple variables.
I need some help in accomplishing this. i have 3 variables
var1=1,23,234
var2=a,ab,xyz
var3=0,0,0
the variables will have variables number of values but same length.(3 in this case )
i... (10 Replies)
Hi!
I've run into a problem where my variables are displayed in the wrong order. Basically I'm supposed to use a file that has information like this username:firstname:lastname:etc:etc.
What I'm interested in doing is reformating it into a something more like this: username lastname,... (2 Replies)
Discussion started by: reindeermountai
2 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)