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Top Forums Shell Programming and Scripting Print the characters in a word Post 302141019 by radoulov on Wednesday 17th of October 2007 09:06:08 AM
Old 10-17-2007
1. With bash (or ksh93 or zsh) and fold:

Code:
$ cat file1
command
$ cat file2
cat meows
xdog barks
apple a day keeps the doctor away

Code:
$ awk 'NR==FNR{l[$1];next};substr($1,1,1) in l' <(fold -w1 file1) file2
cat meows
apple a day keeps the doctor away

or with awk only:

Code:
awk 'NR==FNR{for(i=1;i<=length;i++)l[substr($0,i,1)];next}
substr($1,1,1) in l' file1 file2

Use nawk or /usr/xpg4/bin/awk on Solaris.

P.S. I changed dog to xdog for the demonstration. Why not "dog barks"?
 

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WORDWRAP(3)								 1							       WORDWRAP(3)

wordwrap - Wraps a string to a given number of characters

SYNOPSIS
string wordwrap (string $str, [int $width = 75], [string $break = "0], [bool $cut = false]) DESCRIPTION
Wraps a string to a given number of characters using a string break character. PARAMETERS
o $str - The input string. o $width - The number of characters at which the string will be wrapped. o $break - The line is broken using the optional $break parameter. o $cut - If the $cut is set to TRUE, the string is always wrapped at or before the specified $width. So if you have a word that is larger than the given width, it is broken apart. (See second example). When FALSE the function does not split the word even if the $width is smaller than the word width. RETURN VALUES
Returns the given string wrapped at the specified length. EXAMPLES
Example #1 wordwrap(3) example <?php $text = "The quick brown fox jumped over the lazy dog."; $newtext = wordwrap($text, 20, "<br /> "); echo $newtext; ?> The above example will output: The quick brown fox<br /> jumped over the lazy<br /> dog. Example #2 wordwrap(3) example <?php $text = "A very long woooooooooooord."; $newtext = wordwrap($text, 8, " ", true); echo "$newtext "; ?> The above example will output: A very long wooooooo ooooord. Example #3 wordwrap(3) example <?php $text = "A very long woooooooooooooooooord. and something"; $newtext = wordwrap($text, 8, " ", false); echo "$newtext "; ?> The above example will output: A very long woooooooooooooooooord. and something SEE ALSO
nl2br(3), chunk_split(3). PHP Documentation Group WORDWRAP(3)
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