str="abcdefghijklmnopqrstuvwxyz"
str.each_line do |temp|
    puts temp
end

fl = File.open('a2.txt')
puts fl.lines.count
fl.close

count = 0
fl = File.open('a2.txt').each { |s|
    s = s.chomp
    count = count + 1
    if count == 5
        break
    end
}
fl.close