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Full Discussion: grep command & shell procedure's
Top Forums UNIX for Dummies Questions & Answers grep command & shell procedure's Post 2161 by stevox on Tuesday 24th of April 2001 08:14:51 PM
Old 04-24-2001
hello, i'm trying to pluck words from a list that have exactly 3 occurances of a specified letter. I've come up with this :
grep -i .*$1.*$1.*$1.*
But this also selects words with 4 or more, any tips?

I'm putting this into a shell procedure and want to be able to add a switch before I put the letter to searched in ($1), if you could point me to the correct manual page to read up on that it would be great, I'm using bourne shell.

Thanks in advance
Steve

 

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LEARN ABOUT NETBSD

boggle

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.

AUTHORS

     Boggle is a trademark of Parker Brothers.

     Barry Brachman

     Dept. of Computer Science

     University of British Columbia

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.

     The dictionary that NetBSD installs omits many words that belong in the English language, most notably inflected forms.

BSD
								September 23, 2006							       BSD
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