For this, sed is a nice tool:
If at end of file, branch to <no_tag>, which is to end of script, print and exit (some sed are funny with N at EOF). Get a second line into the buffer. If YOUR_PATTERN is the second line, delete both. Otherwise, spit out the first line, delete it and go back to 'loop' to get another line.
Hi,
I have this problem of separating 10 consecutive lines from a file, say starting from 21 to 30... I have used a filter like this..
head -n 30 myfile | tail -n 10
Is there a simpler way than this? (2 Replies)
Hi all coders,
I need a help to process some data.
I have this file,
3 09/21/08 03:32:07 started undef mino Oracle nmx004.wwdc.numonyx.co
m
Message Text : The Oracle session with the PID 1103 has a CPU time
consuming of 999.00... (3 Replies)
Hi ,
I'm looking for a way to merge two lines only for a given pattern / condition.
Input :
abcd/dad + -49.201 2.09 -49.5 34 ewrew rewtre *
fdsgfds/dsgf/sdfdsfasdd +
-4.30 0.62 -49.5 45 sdfdsf cvbbv *
sdfds/retret/asdsaddsa +
... (1 Reply)
Hello
I have a file in following format:
IV 08:09:07
NM 08:12:01
IC 08:12:00
MN 08:14:20
NM 08:14:15
I need a script to compare time on each line with previous line and show the inconsecutive line. Ex.:
08:12:00
08:14:15
A better way... (6 Replies)
We have very large transaction logs that have transactions which start with a line that starts with 'Begin :' and ends with a line that starts with 'End :'. For most transactions there is valid data between those two lines.
I am trying to get rid of lines that look like this:
Begin :... (11 Replies)
Mysql log has something like below:
I need a bash shell script that will do the following:
1) The script will scan the mysql.log file constantly in real time (something like tail -F mysql.log)
2) If it encounters 5 consecutive identical lines then it would invoke some commands (say... (4 Replies)
I would like to compare the values of 2nd column of consecutive lines of same file in such a way so that if the difference between first value and second value is more than 100 it should print complete line else ignore line.
Input File
==========
PDB 2500
RTDB 123
RTDB-EAGLE 122
VSCCP 2565... (4 Replies)
I have a text file that is about 90,000 lines long. How would I delete lines 64-89, 152-177, 240-265, 328-353... etc? The sections I would like to delete are 26 lines long and the number of lines between the sections I would like to delete is 62 lines. Thanks very much in advance. (6 Replies)
I have a file lake this
cat ex1.txt
</DISCOUNTS>
<B2B_SPECIFICATION elem="0">
<B2B_SPECIFICATION elem="0">
<DESCR>Netti 2 </DESCR>
<NUMBER>D02021507505</NUMBER>
</B2B_SPECIFICATION>
<B2B_SPECIFICATION elem="1">
<DESCR>Puhepaketti</DESCR>... (2 Replies)
Hi
I have a text file like below. THe content of the text will vary.
Entire text file have four consecutive lines followed with blank line.
I want to delete the occurrence of the two consicutive lines in the text file. I don't have pattern to match and delete. Just i need to delete all... (5 Replies)
Discussion started by: RJSKR28
5 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)