Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: mail log parsing script in need of makeover
Top Forums Shell Programming and Scripting mail log parsing script in need of makeover Post 302194496 by era on Tuesday 13th of May 2008 03:45:51 AM
Old 05-13-2008
The script which parses the log file to find the id:s might as well be a little more complex, and extract the final information you want while it's reading through the file anyway. If you're not very familiar with scripting languages, though, that's going to be a bit of a learning curve. I would pick Perl but there is certainly ample facilities for this sort of processing in awk as well.

In a typical mail long, there's rarely more than a few transactions going on at the same time, so memory requirements are probably not a problem. Just write and flush a transaction as soon as you see it's done, and you should never have more than a few in memory at any one time.

Without a more representative log snippet, it's a bit shaky, but here's a first start.

Code:
perl -nae 'if ($F[2] eq "removed") { &flush($F[1]); next; }
if ($F[2] =~ m/^from=(.*)/) { $s{$F[1]} = $1; next; }
if ($F[2] =~ m/^to=(.*),/) { push @{$r{$F[1]}}, $1; next; }
sub flush {
  my ($id) = @_;
  if (@{$r{$id}} <= 5) { map { print "$s{$id}$r{$id}->[$_]\n" } 0..$#{$r{$id}} }
  delete $s{$id};
  undef $r{$id}
}' logfile

This keeps a hash %s of senders and an array @{$r} of receipients for each sender. When a queue entry is removed, it is printed if it has 5 or fewer recipients, and removed from the hash and the array. The use of references makes it a bit hard to read, I'm afraid. It would be simpler but also a bit less efficient if there was just one long string for each sender, which then might or might not be printed. (Or, ahem, use Python.)
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Shell script for parsing 300mb log file..

am relatively new to Shell scripting. I have written a script for parsing a big file. The logic is: Apart from lot of other useless stuffs, there are many occurances of <abc> and corresponding </abc> tags. (All of them are properly closed) My requirement is to find a particular tag (say... (3 Replies)
Discussion started by: gurpreet470
3 Replies

2. Shell Programming and Scripting

Help with script parsing a log file

I have a large log file, which I want to first use grep to get the specific lines then send it to awk to print out the specific column and if the result is zero, don't do anything. What I have so far is: LOGDIR=/usr/local/oracle/Transcription/log ERRDIR=/home/edixftp/errors #I want to be... (3 Replies)
Discussion started by: mevasquez
3 Replies

3. Shell Programming and Scripting

Shell script to parsing log

Hi I Have log like this : 0 234: { 3 2: 04 EE 7 14: '20081114081' 23 1: 00 79 10: '38809' 91 15: '528111510010159' 143 29: 'Streaming/downloading service' 174 3: 'MTV' 179 43: 'rtsp://172.28/MTV2GO-Loop.sdp' 224 1: 05 ... (10 Replies)
Discussion started by: justbow
10 Replies

4. Shell Programming and Scripting

Performance of log parsing shell script very slow

Hello, I am an absolute newbie and whatever I've written in the shell script (below) has all been built with generous help from googling the net and this forum. Please forgive any schoolboy mistakes. Now to the qn, my input file looks like this - 2009:04:03 08:21:41:513,INFO... (7 Replies)
Discussion started by: sowmitr
7 Replies

5. Shell Programming and Scripting

Script for Parsing Log File

Working on a script that inputs an IP, parses and outputs to another file. A Sample of the log is as follows: I need the script to be able to input IP and print the data in an output file in the following format or something similar: Thanks for any help you can give me! (8 Replies)
Discussion started by: Winsarc
8 Replies

6. Shell Programming and Scripting

Log parsing script

Hello, I have a script that parses logs and sends the output via digitally signed and encrypted email. This script uses grep -v to exclude patterns in a file. The problem I have is if this is run via cron none of the pattern matching seems to occur. If I run it by hand it runs exactly as it is... (2 Replies)
Discussion started by: wpfontenot
2 Replies

7. Shell Programming and Scripting

Script for parsing vertical log into horizontal

Hi, I have log like this : And i want the output like below : I have try using awk but doesn't work awk ' /ffff /{ts=$1} f && /SectorAntenna\=1/{sa1=$3} f && /SectorAntenna\=2/{sa2=$3} f && /SectorAntenna\=3/{sa3=$3} { s= ts "|" sa1 "|" sa2 "|" sa3 print s f=0 }' (7 Replies)
Discussion started by: justbow
7 Replies

8. Shell Programming and Scripting

Issue with awk script parsing log file

Hello All, I am trying to parse a log file and i got this code from one of the good forum colleagues, However i realised later there is a problem with this awk script, being naive to awk world wanted to see if you guys can help me out. AWK script: awk '$1 ~ "^WRITER_" {p=1;next}... (18 Replies)
Discussion started by: Ariean
18 Replies

9. Shell Programming and Scripting

Bash Script - Mail Secure.log

I'm putting together a fairly simple script, to check "secure.log" for content and email the results in a cron, nightly. The script runs fine upon manual execution, it's a problem when ran in cron. This is on a Mac server. Any thoughts? #!bin/bash #Email secure.log, nightly. Subject="Secure... (6 Replies)
Discussion started by: Nvizn
6 Replies

10. Shell Programming and Scripting

Parsing a log file and creating a report script

The log file is huge and lot of information, i would like to parse and make a report . below is the log file looks like: REPORT DATE: Mon Aug 10 04:16:17 CDT 2017 SYSTEN VER: v1.3.0.9 TERMINAL TYPE: prod SYSTEM: nb11cu51 UPTIME: 04:16AM up 182 days 57 mins min MODEL, TYPE, and SN:... (8 Replies)
Discussion started by: amir07
8 Replies

LEARN ABOUT DEBIAN

script-email

SCRIPT-EMAIL(8) 					  System Administration Commands					   SCRIPT-EMAIL(8)

NAME

       script-email - Amanda script to send email notifications

DESCRIPTION

       script-email is an Amanda script implementing the Script API. It should not be run by users directly. It sends a notification email to the
       addresses specified in the MAILTO property.

PROPERTIES

       This section lists the properties that control script-email's functionality. See amanda-scripts(7) for information on the Script API,
       script configuration.

       MAILTO

	   List of email addresses that will receive an email on command execution. It is a multi-valued property:
	     property "MAILTO" "amanda@domain.com" "sysadmin@domain.com" "amandauser@domain.com"

EXAMPLE

       In this example, script-email is scheduled to be run before the DLE, on the server.  The unqualified email address amanda will be passed to
       the email system unchanged.  The script is then attached to a dumptype, which can then be specified for any DLEs which require
       notification.
	define script-tool pre-email {
	  comment "email me before this DLE is backed up"
	  plugin  "script-email"
	  execute-on pre-dle-backup
	  execute-where server
	  property "mailto" "amanda"
	}

	define dumptype user-tar-email {
	  user-tar
	  script "pre-email"
	}

SEE ALSO

       amanda(8), amanda.conf(5), amanda-client.conf(5), amanda-scripts(7)

       The Amanda Wiki: : http://wiki.zmanda.com/

AUTHORS

       Jean-Louis Martineau <martineau@zmanda.com>
	   Zmanda, Inc. (http://www.zmanda.com)

       Dustin J. Mitchell <dustin@zmanda.com>
	   Zmanda, Inc. (http://www.zmanda.com)

Amanda 3.3.1							    02/21/2012							   SCRIPT-EMAIL(8)
All times are GMT -4. The time now is 12:59 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy