wc.rb

#!/usr/bin/env ruby
# frozen_string_literal: true
require 'optparse'

ARGV.each do |file_from_arg|
  file = File.read(file_from_arg)
  print file.count("\n").to_s.rjust(8)

  word = File.open(file_from_arg).read.split(/\s+/).count
  print word.to_s.rjust(8)

  size = FileTest.size(file_from_arg)
  print size.to_s.rjust(8)

  filename = File.open(file_from_arg) {|f| f.path }
  puts filename.to_s.rjust(10)
end

=begin
if ARGV == 0
  puts "引数が指定されていません"
elsif ARGV == 1
  puts file_line_count
  puts file_word_count
  puts file_size
  puts filename
elsif ARGV => 2
end
=end