Count the number of files, lines of code and comments in a Ruby project.

ruby-project-stats.rb

o = 0 # Number of files
n = 0 # Number of lines of code
m = 0 # Number of lines of comments
files = Dir.glob('/path/to/dir/**/*.rb')

files.each do |f|
  next if FileTest.directory?(f)
  o += 1
  i = 0
  lines = []
  File.new(f).each_line do |line|
    if line.strip[0] == '#'
      m += 1
      next
    end
    lines << line
    i += 1
  end
  n += i
end

puts "#{o.to_s} files."
puts "#{n.to_s} lines of code."
puts "#{(n.to_f/o.to_f).round(2)} LOC/file."
puts "#{m.to_s} lines of comments."