I followed the egrep example given in the thread "parse text or complex grep ?". It is exactly what I need...except... how do I insert a blank line after the second line? My exact command is:
egrep 'patt1|patt2' filename
the result is:
patt1
patt2
patt1
patt2
and so on. I would... (2 Replies)
the following range matching works great but i wish to add a blank line after each range result set... which i've tried and researched to no avail
MY INPUT DATA:
CURRENT CODE I'M USING:
sed -n '/*$/,/;/p' $INPUT_FILE
RESULTS I'M GETTING:
RESULT I looking to... (5 Replies)
Hello...
I have a file which contain certain number of records.
I want to generate another file from this file which will contain 1st line as a blank line & after every 5 lines one blank line will be inserted. How to achieve this through shell scripting?
Thanks... (5 Replies)
Hi,
I am new to Sed /awk commands. using that i want to add new empty line after every line in a file by leaving first three lines. So, can any one help me out how to achieve this.
Example:
---------
Input Filename: file1.txt
Input Data:
--------Report--------
Date:20-10-03... (4 Replies)
I am having a text file sample.txt
The contents of the sample.txt is as follows.
____________
aaa,bbb
ccc,ddd
____________
first line contains aaa,bbb
second line is blank
third line contains ccc,ddd
Now I need to write a script to search in the file sample.txt. If it contains... (4 Replies)
I use the following as part of a script to correct for a faulty hostname file.
# get the domain name
read -r thehostname < /etc/hostname
dom="$(echo $thehostname | cut -d'.' -f2)"
numchar=${#dom}
if
then
echo "It appears as though the hostname is not correctly set."
echo "Hostname has... (5 Replies)
Hi All,
I have a file.txt which seems like having three lines.
wc -l file.txt
3 file.txt
In fact, once it is open in text editor, this file has four lines where the last line is empty. how can i delete this last empty line of the file.txt? I tried the codes below so far but they... (6 Replies)
Dear all
I want to search special string in file and then print next all line in one line until blank lines come. Help me plz for same. My input file and desire op file is as under.
i/p file:
A1/EXT "BSCABD1_21233G1" 757 130823 1157
RADIO X-CEIVER ADMINISTRATION
BTS EXTERNAL FAULT
... (7 Replies)
Hello,
I need a program that read a file line by line and prints out lines 1, 2 & 3 after an empty line... An example of entries in the file would be:
SRVXPAPI001 ERRO JUN24 07:28:34 1775
REASON= 0000, PROCID= #E506 #1065: TPCIPPR, INDEX= 003F
... (8 Replies)
Hi Guys,
I am stuck in between and seeking help here.
Requirement: A script that will run every morning which will connect to Mysql database and run the query to inform us about the holidays (it will also check if there were any holidays during last 2 business days). So the three queries are... (11 Replies)
Discussion started by: Sambit Sahu
11 Replies
LEARN ABOUT DEBIAN
io::async::signal
IO::Async::Signal(3pm) User Contributed Perl Documentation IO::Async::Signal(3pm)NAME
"IO::Async::Signal" - event callback on receipt of a POSIX signal
SYNOPSIS
use IO::Async::Signal;
use IO::Async::Loop;
my $loop = IO::Async::Loop->new;
my $signal = IO::Async::Signal->new(
name => "HUP",
on_receipt => sub {
print "I caught SIGHUP
";
},
);
$loop->add( $signal );
$loop->run;
DESCRIPTION
This subclass of IO::Async::Notifier invokes its callback when a particular POSIX signal is received.
Multiple objects can be added to a "Loop" that all watch for the same signal. The callback functions will all be invoked, in no particular
order.
EVENTS
The following events are invoked, either using subclass methods or CODE references in parameters:
on_receipt
Invoked when the signal is received.
PARAMETERS
The following named parameters may be passed to "new" or "configure":
name => STRING
The name of the signal to watch. This should be a bare name like "TERM". Can only be given at construction time.
on_receipt => CODE
CODE reference for the "on_receipt" event.
Once constructed, the "Signal" will need to be added to the "Loop" before it will work.
AUTHOR
Paul Evans <leonerd@leonerd.org.uk>
perl v5.14.2 2012-10-24 IO::Async::Signal(3pm)