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Full Discussion: Log Rotation Tool/Script
Top Forums Shell Programming and Scripting Log Rotation Tool/Script Post 45304 by auswipe on Wednesday 17th of December 2003 08:27:53 PM
Old 12-17-2003
Here is a link to a thread where we came up with a perl solution for automagic log rotating based upon number of entries. This by-passes syslogd so it might or might not be useful to you.

http://www.freebsdforums.org/forums/...3949#post13949

The perl code is as follows:

Code:
#!/usr/bin/perl

# Real cheezy attempt at piping STDOUT into a perl routine to automagically
# rotate logs. Idea inspired by cRock.
# Auswipe sez "Hey, no guarantees!"

my $lineCounter = 0;
my $logCount    = 1;

#open(LOGFILE, ">app.log.$logCount");

while (true) {
  if (($lineCounter > 1000) || ($lineCounter == 0)) {
    close(LOGFILE);
    open(LOGFILE, ">app.log.$logCount");
    $logCount++;
    $lineCounter = 1;
    # print STDERR "Rolled log to app.log.$logCount\n";
  };
  $logEntry = <STDIN>;
  $lineCounter++;
  print LOGFILE "$logEntry";
  #print STDERR "Made log entry.\n";
};

Sample usage:

Code:
./someapp | ./perl_buffer

 

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Appender::Screen(3)					User Contributed Perl Documentation				       Appender::Screen(3)

NAME
Log::Log4perl::Appender::Screen - Log to STDOUT/STDERR SYNOPSIS
use Log::Log4perl::Appender::Screen; my $app = Log::Log4perl::Appender::Screen->new( stderr => 0, utf8 => 1, ); $file->log(message => "Log me "); DESCRIPTION
This is a simple appender for writing to STDOUT or STDERR. The constructor "new()" take an optional parameter "stderr", if set to a true value, the appender will log to STDERR. The default setting for "stderr" is 1, so messages will be logged to STDERR by default. If "stderr" is set to a false value, it will log to STDOUT (or, more accurately, whichever file handle is selected via "select()", STDOUT by default). Design and implementation of this module has been greatly inspired by Dave Rolsky's "Log::Dispatch" appender framework. To enable printing wide utf8 characters, set the utf8 option to a true value: my $app = Log::Log4perl::Appender::Screen->new( stderr => 1, utf8 => 1, ); This will issue the necessary binmode command to the selected output channel (stderr/stdout). COPYRIGHT AND LICENSE
Copyright 2002-2009 by Mike Schilli <m@perlmeister.com> and Kevin Goess <cpan@goess.org>. This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.12.1 2010-02-07 Appender::Screen(3)
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