I presume what you want is to determine what's between the include tags, ignoring the leading '$CONFIGURATION_PATH$/'. 

my ($desired) =
   $original =~ m{^<include>\$CONFIGURATION_PATH\$/(.*)</include>$};

[download]

Update: Removed stray slash in regexp.

In reply to Re: Extract a string by ikegami
in thread Extract a string by scarus

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