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Top Forums Shell Programming and Scripting Change case preserving the same case Post 302649249 by otheus on Thursday 31st of May 2012 05:37:24 AM
Old 05-31-2012
Your examples are unclear. It seems to me you asked for the ability to convert all characters to lowercase, except the first letter of each "word" is preserved. But your examples show the trivial case.

It seems to me this problem is too complex for sed/awk (without hard-coding the before/after values for each case). I think perl has an elegant solution:
Code:
perl -pe 's/(?<![a-zA-Z0-9])([a-zA-Z])([a-zA-Z0-9]*)/$1\L$2\E/g'

Before:
Code:
.TesT thIs-ThiNg Now

After:
Code:
.Test this-Thing Now

If you want to add your extension-appending code, it's pretty trivial to do that in perl. First, make sure this code will work for you.
 

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BOGGLE(6)							 BSD Games Manual							 BOGGLE(6)

NAME
boggle -- word search game SYNOPSIS
boggle [-bd] [-s seed] [-t time] [-w length] [+ [+]] [boardspec] DESCRIPTION
The object of boggle is to find as many words as possible on the Boggle board within the three minute time limit. A Boggle board is a four by four arrangement of Boggle cubes, each side of each cube displaying a letter of the alphabet or `qu'. Words are formed by finding a sequence of cubes (letters) that are in the game's dictionary. The (N+1)th cube in the word must be horizontally, vertically, or diagonally adjacent to the Nth cube. Cubes cannot be reused. Words consist solely of lower case letters and must be at least 3 letters long. Command line flags can be given to change the rules of the game. -b Run boggle in batch mode. A boardspec must also be given. The dictionary is read from stdin and a list of words appearing in boardspec is printed to stdout. -d Enable debugging output. -s seed Specify a seed seed other than the time of day. -t time Set the time limit for each game from the default 3 minutes to time seconds. -w length Change the minimum word length from 3 letters to length. + This flag allows a cube to be used multiple times, but not in succession. ++ This flag allows the same cubes to be considered adjacent to itself. boardspec A starting board position can be specified on the command line by listing the board left to right and top to bottom. Help is available during play by typing '?'. More detailed information on the game is given there. BUGS
If there are a great many words in the cube the final display of the words may scroll off of the screen. (On a 25 line screen about 130 words can be displayed.) No word can contain a 'q' that is not immediately followed by a 'u'. When using the + or ++ options the display of words found in the board doesn't indicate reused cubes. AUTHOR
Boggle is a trademark of Parker Brothers. Barry Brachman Dept. of Computer Science University of British Columbia BSD
April 1, 2001 BSD
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