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Grep multi line with keyword ?

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Old 08-05-2019
Note also that if you are looking for the string Recieve Data From Amazon, you might never find it because you have misspelled Receive. Does your input file also contain that misspelling or is it possible that your code can't find the boundaries of the paragraphs you want to copy because the text you are looking for never appears in your actual input?
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LEARN ABOUT DEBIAN

mail::mbox::messageparser::grep

Mail::Mbox::MessageParser::Grep(3pm)			User Contributed Perl Documentation		      Mail::Mbox::MessageParser::Grep(3pm)

NAME

       Mail::Mbox::MessageParser::Grep - A GNU grep-based mbox folder reader

SYNOPSIS

	 #!/usr/bin/perl

	 use Mail::Mbox::MessageParser;

	 my $filename = 'mail/saved-mail';
	 my $filehandle = new FileHandle($filename);

	 my $folder_reader =
	   new Mail::Mbox::MessageParser( {
	     'file_name' => $filename,
	     'file_handle' => $filehandle,
	     'enable_grep' => 1,
	   } );

	 die $folder_reader unless ref $folder_reader;

	 # Any newlines or such before the start of the first email
	 my $prologue = $folder_reader->prologue;
	 print $prologue;

	 # This is the main loop. It's executed once for each email
	 while(!$folder_reader->end_of_file());
	 {
	   my $email = $folder_reader->read_next_email();
	   print $email;
	 }

DESCRIPTION

       This module implements a GNU grep-based mbox folder reader. It can only be used when GNU grep is installed on the system. Users must not
       instantiate this class directly--use Mail::Mbox::MessageParser instead. The base MessageParser module will automatically manage the use of
       grep and non-grep implementations.

   METHODS AND FUNCTIONS
       The following methods and functions are specific to the Mail::Mbox::MessageParser::Grep package. For additional inherited ones, see the
       Mail::Mbox::MessageParser documentation.

       $ref = new( { 'file_name' => <mailbox file name>, 'file_handle' => <mailbox file handle> });
	       <file_name> - The full filename of the mailbox
	       <file_handle> - An opened file handle for the mailbox

	   The constructor for the class takes two parameters. The file_name parameter is the filename of the mailbox. The file_handle argument is
	   the opened file handle to the mailbox.

	   Returns a reference to a Mail::Mbox::MessageParser object, or a string describing the error.

BUGS

       No known bugs.

       Contact david@coppit.org for bug reports and suggestions.

AUTHOR

       David Coppit <david@coppit.org>.

LICENSE

       This software is distributed under the terms of the GPL. See the file "LICENSE" for more information.

HISTORY

       This code was originally part of the grepmail distribution. See http://grepmail.sf.net/ for previous versions of grepmail which included
       early versions of this code.

SEE ALSO

       Mail::Mbox::MessageParser

perl v5.10.1							    2009-08-09				      Mail::Mbox::MessageParser::Grep(3pm)