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Full Discussion: Filter records from a log file based on timestamp
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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LEARN ABOUT OSX

xip

xip(1)							    BSD General Commands Manual 						    xip(1)

NAME

     xip -- Create a signed archive for secure distribution

SYNOPSIS

     xip [options] --sign identity input-file ... output-archive

DESCRIPTION

     The xip tool archives one or more files or directories into a signed XIP file. A XIP file is an analog to zip(1), but allows for a digital
     signature to be applied and verified on the receiving system, before the archive is expanded. When a XIP file is opened (by double-clicking),
     Archive Utility will automatically expand it (but only if the digital signature is intact).

     To create a XIP file, you will need to have a certificate and corresponding private key -- together called an ``identity'' -- in one of your
     accessible keychains. To add a signature, specify the name of the identity using the --sign option. The identity's name is the same as the
     ``Common Name'' of the certificate.

     If you want to search for the identity in a specific keychain, specify the path to the keychain file using the --keychain option. Otherwise,
     the default keychain search path is used.

     xip will embed the signing certificate in the XIP file, as well as any intermediate certificates that are found in the keychain.

     The signature can optionally include a trusted timestamp. This is enabled by default when signing with a Developer ID identity, but it can be
     enabled explicitly using the --timestamp option. A timestamp server must be contacted to embed a trusted timestamp. If you aren't connected
     to the Internet, you can use --timestamp=none to disable timestamps, even for a Developer ID identity.

ARGUMENTS AND OPTIONS

     --sign identity-name
		 The name of the identity to use for signing the archive.

     --keychain keychain-path
		 Specify a specific keychain to search for the signing identity.

     --timestamp
		 Include a trusted timestamp with the signature.

     --timestamp=none
		 Disable trusted timestamp, regardless of identity.

     input-file ...
		   The path to one or more files or directories to be archived.

     output-archive
		   The path to which the signed archive will be written.

Mac OS								September 23, 2011							    Mac OS
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