#!/usr/bin/ruby -Ke

if ARGV.size == 1
    input = $stdin
elsif ARGV.size == 2
    input = open(ARGV[1],'r')
else
    exit
end

key = Regexp.new(ARGV[0])

while !( input.eof? )
    line = input.gets.chomp
    if !( key =~ line )
        puts line
    end
end