Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!jarthur!uunet!mcsun!ukc!cf-cm!bharat
From: bharat@computing-maths.cardiff.ac.uk (Bharat Mediratta)
Newsgroups: comp.sources.wanted
Subject: Re: logfile management program needed ...
Keywords: logfile
Message-ID: <1991May9.133329.10815@cm.cf.ac.uk>
Date: 9 May 91 13:33:29 GMT
References: <100@morwyn.UUCP>
Sender: news@cm.cf.ac.uk (USENET News System)
Organization: University of Wales College of Cardiff
Lines: 46

In article <100@morwyn.UUCP> forrie@morwyn.UUCP (Forrie Aldrich) writes:
>I'm looking for a program that can be used to trim (regularly)
>logfiles such as /usr/adm/sulog and /usr/spool/smail/log/logfile,
>and the such that accumalte frequently ... yet retain the last
>few entries while deleting the rest...
>
>I've heard about a program like this somewhere, but haven't been
>able to find it.

I use a shell script to trim my internal logfiles (.where, mail_log, etc.)
and I find it pretty useful.

Cheers, 
  Bharat

--- CUT HERE --
#!/bin/csh -f

set name = $argv[1]
set tmp  = /tmp/$name
set max  = 200          # Max number of lines in log before it's trimmed
set min  = 80	 	# what the log's trimmed down to
set size = `wc -l $name | awk '{print $1}'`

if ("`expr $size \> $max`" == "1") then
	tail -$min < $name > $tmp 	
 	if (-e $tmp) then
		if (`wc -l $tmp | awk '{print $1}'` == $min) then
			cp $tmp $name
			/bin/rm -f $tmp
		else 
			echo "Error: Processed file incorrectly."
		endif
	else 
		echo "Error: Couldn't create temporary file."
	endif
endif

-- CUT HERE --


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