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Top Forums Shell Programming and Scripting Filter or remove duplicate block of text without distinguishing marks or fields Post 302563514 by radoulov on Tuesday 11th of October 2011 12:05:57 PM
Old 10-11-2011
This should handle multiple trailing newlines (the multiple leading newlines should be already OK):
Code:
awk 'END {
  for (i = 0; ++i <= idx;)
    printf "%s\n", p[i]
  if (p[i - 1] != r)
    print r  
  }
/\$newpage/ {
    sub(/\n\n*$/, "\n", r)
    t[r]++ || p[++idx] = r
    r = x; next
    }
{
  r = r ? r RS $0 : $0  
  }' infile

Le me know how it goes!
This User Gave Thanks to radoulov For This Post:
 

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

NAME
Courier::Filter::Logger::Syslog - Syslog logger for the Courier::Filter framework SYNOPSIS
use Courier::Filter::Logger::Syslog; my $logger = Courier::Filter::Logger::Syslog->new(); # 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 => $logger, ... ); DESCRIPTION
This class is a syslog logger class for use with Courier::Filter and its filter modules. It is derived from Courier::Filter::Logger::IOHandle. Constructor The following constructor is provided: new: returns Courier::Filter::Logger::Syslog; throws Courier::Error Creates a new logger that logs messages to syslog. Instance methods The following instance methods are provided, as inherited from Courier::Filter::Logger::IOHandle: log_error($text): throws Perl exceptions Logs the error message given as $text (a string which may contain newlines). log_rejected_message($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::IOHandle, 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::Syslog(3pm)
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