parsing argument in perl Post: 302551654

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perlindex

PERLINDEX(1p)						User Contributed Perl Documentation					     PERLINDEX(1p)

NAME

       perlindex - index and query perl manual pages

SYNOPSIS

	   perlindex -index

	   perlindex tell me where the flowers are

DESCRIPTION

       ""perlindex -index"" generates an AnyDBM_File index which can be searched with free text queries ""perlindex" a verbose query".

       Each word of the query is searched in the index and a score is generated for each document containing it. Scores for all words are added
       and the documents with the highest score are printed.  All words are stemed with Porters algorithm (see Text::English) before indexing and
       searching happens.

       The score is computed as:

	   $score{$document} += $tf{$word,$document}/$maxtf{$document}
				* log ($N/$n{$word});

       where

       $N	 is the number of documents in the index,

       $n{$word} is the number of documents containing the word,

       $tf{$word,$document}
		 is the number of occurances of word in the document, and

       $maxtf{$document}
		 is the maximum freqency of any word in document.

OPTIONS

       All options may be abreviated.

       -maxhits maxhits
		 Maximum numer of hits to display. Default is 15.

       -menu
       -nomenu	 Use the matches as menu for calling "man". Default is -menu.q

       -cbreak
       -nocbreak Switch to cbreak in menu mode or don't. -cbreak is the default.

       -verbose  Generates additional information which query words have been not found in the database and which words of the query are
		 stopwords.

       -conf	 Use another config than the default config (/etc/perlindex/config).

EXAMPLE

	   perlindex foo bar

	   1  3.735 lib/pod/perlbot.pod
	   2  2.640 lib/pod/perlsec.pod
	   3  2.153 lib/pod/perldata.pod
	   4  1.920 lib/Symbol.pm
	   5  1.802 lib/pod/perlsub.pod
	   6  1.586 lib/Getopt/Long.pm
	   7  1.190 lib/File/Path.pm
	   8  1.042 lib/pod/perlop.pod
	   9  0.857 lib/pod/perlre.pod
	   a  0.830 lib/Shell.pm
	   b  0.691 lib/strict.pm
	   c  0.691 lib/Carp.pm
	   d  0.680 lib/pod/perlpod.pod
	   e  0.680 lib/File/Find.pm
	   f  0.626 lib/pod/perlsyn.pod
	   Enter Number or 'q'>

       Hitting the keys 1 to "f" will display the corresponding manual page. Hitting "q" quits. All other keys display this manual page.

FILES

       The index will be generated in your man directory. Strictly speaking in "$Config{man1direxp}/.."

	   The following files will be generated:

	   index_fn	      # docid -> (max frequency, filename)
	   index_idf	      # term  -> number of documents containing term
	   index_if	      # term  -> (docid, frequency)*
	   index_seen	      # fn    -> indexed?

AUTHOR

       Ulrich Pfeifer <pfeifer@ls6.informatik.uni-dortmund.de>

perl v5.14.2							    2012-01-26							     PERLINDEX(1p)