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Full Discussion: Delete duplicate lines... with a twist!
Top Forums Shell Programming and Scripting Delete duplicate lines... with a twist! Post 302576068 by shamrock on Wednesday 23rd of November 2011 02:07:33 PM
Old 11-23-2011
Quote:
Originally Posted by shadowww
Sure, It is 5mb compilation of trivia questions. One question per row with * for separator from answer (file will be used by irc trivia bot). Aim is to weed out automatically as much duplicate questions as possible. There is sample in my first post but here is bigger chunk of file: sample trivia - Pastebin.com which also shows entries that get selected as duplicates and deleted with your code - these are the ones starting with "Algebra : "
Is * the only non alphanumeric character in the input file as that makes it easy...but is that really the case as your original post had others...so if you define it clearly a better awk solution can be given...
This User Gave Thanks to shamrock For This Post:
shadowww
 

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LEARN ABOUT DEBIAN

ha

ha(1)								    HA archiver 							     ha(1)

NAME

       ha - a small file archiver utility

SYNOPSIS

       ha <command>[<option><option>...]  archive [ name ...  ]

DESCRIPTION

       After the program name comes a command name (single letter) and options (single letters, appended to the command name without a space).

COMMANDS

       a[sdqemr012]
	      Add files matching search pattern to archive.

       e[aqty]
	      Extract files matching search pattern from archive.

       x[aqty]
	      Extract files matching search pattern from archive using path information stored in archive.

       l[f]   List files currently in archive.

       d[q]   Delete files matching search pattern from archive.  If archive does not contain any files after deletion it is removed.

       f[sdqemr012]
	      Freshen files in archive. All files matching search pattern and newer than version already in archive are updated to archive.

       u[sdqemr012]
	      Update  files to archive. All files matching search pattern that are newer than version already in archive or are not yet in archive
	      are updated to archive.

       t[q]   Test files in archive.

OPTIONS

       0,1,2  Try compression method #. More than one can be specified.

	      Methods are:
		0-CPY  Simple copying of files.
		1-ASC Default method using sliding window dictionary followed by arithmetic
		      coder. Offers quite good compression on wide variety of file types.
		2-HSC Compression method based on finite context model and arithmetic
		      coder. Quite slow for binary data, but offers very good compression
		      especially for longer text files.

       y      Assume answer yes on all questions.

       t      Touch files when extracting. Sets file times to current machine time.

       r      Recurse through subdirectories while searching for files matching search pattern.

       f      Full listing of stored file information.

       m      Move files when archiving. Files are removed from disk after they are successfully written to archive.

       a      Set system specific file attributes when extracting files.

       s      Find special files when archiving.

       e      Do not store pathname information.

       q      Quiet operation.

       d      Make separate entries for directories. Saves information about empty directories, directory attributes etc. in archive.

AUTHOR

       This manual page was written by Mikhail Gusarov <dottedmag@dottedmag.net> for Debian GNU/Linux system (but may be used by others).

ha 0.999p							    3 Jul 2008								     ha(1)
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