i read the variable ph from file and i wanna to print it in awk.
example
ph=`cat tmpbatch`
tail h.txt|grep "| |"|awk -F"|" '{ print "@unpdx.sql",$5 }'"$ph"
i try this but it does not work (8 Replies)
How can I pass the name of the variable inside a for statment
I have a script something like below:
classA=12
classB=14
classC=16
# classD = 20
all_class="classA classB classC"
for i in $all_class
do
echo $i = $($i) #<---- this one not work
#echo $i = $(echo $i) ... (1 Reply)
Hi,
Could any one please let me know what is the option
available in UNIX to print by specifying the paper size?
We are using Unix11i. I could n't see any option specified in the 'lp' command to print the report by specifying the size of the paper. It would be of great help to me, if... (1 Reply)
:b:Hi All,
I have a part of a script below:
var1="value1"
awk 'BEGIN {printf("%36s \n ","value1")}'
Instead of directly giving the "value1" , I need to give using "var1" in the above awk statement.
Is this possible?
If so, what is the modified awk command?
Thanks in advance
JS (1 Reply)
Let's say I want to print the arguments $4 till $#, how can I do this?
$# contains the number of arguments
$@ contain all the arguments as string
What i need is something like
for i in $4_till_$#; do
#do something with $i
convert $i ~/$output
done
The first 3 arguments are used as options... (6 Replies)
I have list of files:
ls
a.pdf
b.pdf
c.pdf
and so on...
and I have a file like this:
cat file1
apple
mango
pear
and so on...
I want to rename my file like this: (7 Replies)
Hi,
I've stored the output of a command into a variable.
The variable contains the following output:
outputline1 outputline2 outputline3 ...
How can I echo the variable so that the output is as follow and not one line:
outputline1
outputline2
outputline2
...
Thanks a lot! (4 Replies)
hey,
just want to ask how to do this.
ex.
g="hi i am john"
h=`echo $g | awk '{print $2}'`
echo $h
OUTPUT is 'i'
What if I want to use a variable instead of using '2', how do I do that?
Because this one does not work:
a=2
h=`echo $g | awk '{print ${$a}}'`
this one also does not... (3 Replies)
i have this variable:
varT="1--2--3--5"
i want to use awk to print field 3 from this variable. i dont want to do the "echo $varT".
but here's my awk code:
awk -v valA="$varT" "BEGIN {print valA}"
this prints the entire line. i feel like i'm so close to getting what i want. i... (4 Replies)
Hi guys,
I have a file "abc.dat" in below format:
FILE_PATH||||$F_PATH
TABLE_LIST||||a|b|c
SYST_NM||||${SRC_SYST}
Now I am trying to read the above file and want to print the value for above dollar variables F_PATH and SRC_SYST. The problem is it's reading the dollar variables as... (5 Replies)
Discussion started by: abcabc1103
5 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)