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Full Discussion: matching characters between strings
Top Forums UNIX for Dummies Questions & Answers matching characters between strings Post 302098875 by vino on Thursday 7th of December 2006 07:03:56 AM
Old 12-07-2006
Here is a basic script. Modify to suite your requirements.

Code:
[/tmp]$ cat try.ksh
#! /bin/ksh

haystack="The quick brown fox jumps over the lazy dog"
needle="acefizkjlfsh"

hold=$needle
typeset -L1 bit
match=""

while [[ ${#hold} -gt 0 ]]
do
    bit=$hold
    if [[ $haystack = *$bit* ]] ; then
        if [[ $match != *$bit* ]] ; then
            match=$match$bit
        fi;
    fi;
    hold=${hold#$bit}
done

echo "${#match} - $match"
[/tmp]$ ./try.ksh
11 - acefizkjlsh
[/tmp]$

Last edited by vino; 12-07-2006 at 08:38 AM..
 

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LEARN ABOUT PHP

mb_strstr

MB_STRSTR(3)								 1							      MB_STRSTR(3)

mb_strstr - Finds first occurrence of a string within another

SYNOPSIS

       string mb_strstr (string  $haystack, string  $needle, [bool  $before_needle = false], [string  $encoding = mb_internal_encoding()])

DESCRIPTION

       mb_strstr(3)  finds  the first occurrence of $needle in $haystack and returns the portion of $haystack. If $needle is not found, it returns
       FALSE.

PARAMETERS

	      o $haystack
		- The string from which to get the first occurrence of $needle

	      o $needle
		- The string to find in $haystack

	      o $before_needle
		- Determines which portion of $haystack this function returns. If set to TRUE, it returns all of $haystack from the  beginning	to
		the  first  occurrence	of  $needle  (excluding needle). If set to FALSE, it returns all of $haystack from the first occurrence of
		$needle to the end (including needle).

	      o $encoding
		- Character encoding name to use. If it is omitted, internal character encoding is used.

RETURN VALUES

	Returns the portion of $haystack, or FALSE if $needle is not found.

SEE ALSO

       stristr(3), strstr(3), mb_stristr(3).

PHP Documentation Group 													      MB_STRSTR(3)
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