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Top Forums UNIX for Beginners Questions & Answers Filter records from a log file based on timestamp Post 303043479 by mukulverma2408 on Wednesday 29th of January 2020 11:56:01 AM
Old 01-29-2020
Dear Experts,
This is what I've tried by converting into epoch time and it's giving me the desired result however it seems to me like this is not the standard way of doing this, do you mind taking a look and improve this solution pls.
Code:
dt1=`date -d 'Jan 19 21:15:00' +%s`
#echo $dt1
while read line
do
	tmstmp=$(echo $line | cut -c '1-15' )
	#echo $tmstmp
	dt2=`date -d "$tmstmp" +%s`
	#echo  $dt2
	echo "Ref time in epoch is $dt1"
	echo "Timestamp from file is $tmstmp"
	echo "Timestamp from file in epoch is $dt2"
	if [[ $dt2 -le $dt1 ]]
	then
		echo "This event occured before 21:15, inserting into new log file"
		echo $line >> filter.txt
	else
		continue 
		
	fi		
	
done < auth.log

 

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Courier::Filter::Logger::IOHandle(3pm)			User Contributed Perl Documentation		    Courier::Filter::Logger::IOHandle(3pm)

NAME
Courier::Filter::Logger::IOHandle - I/O handle logger for the Courier::Filter framework SYNOPSIS
use Courier::Filter::Logger::IOHandle; my $logger = Courier::Filter::Logger::IOHandle->new( handle => $handle ); # For use in an individual filter module: my $module = Courier::Filter::Module::My->new( ... logger => $logger, ... ); # For use as a global Courier::Filter logger object: my $filter = Courier::Filter->new( ... logger => $logger, ... ); DESCRIPTION
This class is an I/O handle logger class for use with Courier::Filter and its filter modules. Constructor The following constructor is provided: new(%options): returns Courier::Filter::Logger::IOHandle Creates a new logger that logs messages as lines to an I/O handle. %options is a list of key/value pairs representing any of the following options: handle Required. The I/O handle or IO::Handle object to which log messages should be written. timestamp A boolean value controlling whether every log message line should be prefixed with a timestamp (in local time, in ISO format). Defaults to false. Instance methods The following instance methods are provided: log_error($text): throws Perl exceptions Logs the error message given as $text (a string which may contain newlines). Prefixes each line with a timestamp if the "timestamp" option has been set through the constructor. log_rejected_message($message, $reason): throws Perl exceptions Logs the Courier::Message given as $message as having been rejected due to $reason (a string which may contain newlines). SEE ALSO
Courier::Filter::Logger, Courier::Filter::Overview. For AVAILABILITY, SUPPORT, and LICENSE information, see Courier::Filter::Overview. AUTHOR
Julian Mehnle <julian@mehnle.net> perl v5.14.2 2011-12-27 Courier::Filter::Logger::IOHandle(3pm)
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