source: rubysleuth/ntfsdirrec @ 277

#!/usr/bin/env ruby

require 'sleuth.rb'
include Sleuth

if ARGV.count != 2
        $stderr.print( "Usage: #{File.basename( $0 )} <image> <pattern>\n" )
        exit( 1 )
else
        haystack = ARGV[0]
        needle = ARGV[1]
end

begin
#       throw Exception if not File.stat( haystack ).readable?
rescue
        $stderr.print( "'#{haystack}' could not be found or is unreadable.\n" )
        exit( 1 )
end

print( "Searching for '#{needle}' in '#{haystack}'..\n\n" )

matches = Image.new( haystack ).searchDir( needle )
if matches.count > 0
        print( "Found #{matches.count} matches:\n" )

        i = 0
        matches.each do |match|
                i += 1
                print( "  #{i}. #{match}\n" )
        end

        choice = 0
        while choice < 1 or choice > i
                print( "\nChoose wisely (by number): " )
                begin
                        choice = $stdin.gets.to_i
                rescue Interrupt
                        exit( 1 )
                end
        end
        
        choice -= 1
        matches[choice].recover do |match|
                print( "#{match.path}\n" )
        end
else
        $stderr.print( "No matches found.\n" )
        exit( 1 )
end