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Full Discussion: How can I do this in VI editor?
Top Forums Shell Programming and Scripting How can I do this in VI editor? Post 302778139 by hanson44 on Saturday 9th of March 2013 09:47:23 PM
Old 03-09-2013
Thank you for educating me. I appreciate the incredibly detailed research you did.

You are right eventually the line count gets too high for that unsigned long, and the data overflows. So I was flat wrong in saying "no matter how many lines", or even saying "billions of lines". When I heard the word "choke", I thought the poster was thinking "running out of memory", and perhaps they didn't understand about sed pattern space. I should have done a simple test before speaking.

I would suggest for the vast majority of real-world situations sed will not "choke" on files with many lines. My guess is very few situations use billions of lines. The previous poster cero was worried about a file with 14 million lines. I hope I'm correct in saying it would at least work with that file. But you are absolutely right that it screws up when that unsigned long overflows. And yes, as you pointed out, sed should abort with an error code before reading a line.

Anyway, I apologize for the totally unrealistic assertion "no matter how many lines".
 

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LEARN ABOUT DEBIAN

news::scan::poster

News::Scan::Poster(3pm) 				User Contributed Perl Documentation				   News::Scan::Poster(3pm)

NAME

       News::Scan::Poster - keep track of posters to a newsgroup

SYNOPSIS

	   use News::Scan::Poster;

	   my $poster = News::Scan::Poster->new($news_scan_article_obj);

DESCRIPTION

       This module provides a class whose objects can be used to keep track of cumulative statistics for posters to a Usenet newsgroup such as
       header volume or signature lines.

CONSTRUCTOR

       new ( ARTICLE )
	   "ARTICLE" should be a "News::Scan::Article" object or inherit from the "News::Scan::Article" class.

	   "new" performs some initialization and returns a "News::Scan::Poster" object.

METHODS

       address ( [ ADDRESS ] )
	   Returns the address of this poster represented as a "Mail::Internet" object.

	   If present, "ADDRESS" tells the object that the "Mail::Internet" object in "ADDRESS" is its address.  idea.

       attrib ( [ ATTRIBUTION ] )
	   Returns some nice attribution for this poster.

	   If present, "ATTRIBUTION" tells the object how it shall identify itself when asked.

       message_ids ( [ MESSAGE-ID ] )
	   Returns a list of Message-IDs attributed to this poster.

	   If present, "MESSAGE-ID" is added to this list of this poster's articles.

       volume
	   Returns the volume in bytes of the traffic generated by this poster.

       articles
	   Returns the number of articles attributed to this poster.

       posted_to
	   Returns a hash whose keys are newsgroup names and whose values are the number of times this poster has crossposted to the group of
	   interest and the corresponding newsgroup.

       crossposts
	   Returns the total number of crossposts this poster has sent through the group of interest.

       header_volume
	   Returns the volume in bytes generated by this poster's headers.

       header_lines
	   Returns the number of header lines generated by this poster.

       body_volume
	   Returns the volume in bytes generated by this poster's message bodies.

       body_lines
	   Returns the number of body lines generated by this poster.

       orig_volume
	   Returns the volume in bytes of original content generated by this poster.

       orig_lines
	   Returns the number of original lines generated by this poster.

       sig_volume
	   Returns the volume in bytes generated by this poster's signatures.

       sig_lines
	   Returns the number of signature lines generated by this poster.

SEE ALSO

       News::Scan, Mail::Address, News::Scan::Article

AUTHOR

       Greg Bacon <gbacon@cs.uah.edu>

COPYRIGHT

       Copyright (c) 1997 Greg Bacon.  All Rights Reserved.  This library is free software.  You may distribute and/or modify it under the same
       terms as Perl itself.

perl v5.10.1							    2000-04-13						   News::Scan::Poster(3pm)
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