ruby gz file read

gz_read.rb

# gz 圧縮ファイル展開しながら読み込み
require 'zlib'

filename_gz = "mysql-bin.000004.sql.gz"

lineno = 0
Zlib::GzipReader.open( filename_gz ) do |gz|
	gz.each do |line|
		lineno += 1
		if /reg/i === line
			puts "#{lineno}: #{line}"
		end
	end
end