シバンを直すやつ

fix_shebang.rb

#!/usr/bin/env ruby
#-*- coding: utf-8 -*-

require "fileutils"

# dir = File::dirname(__FILE__) + '/bin'
dir = "/usr/local/rvm/gems/ruby-1.9.2-p290/bin"
files = Dir::entries(dir)
files.each do |f|
  unless f =~ /^\.+$/
    FileUtils.mv("#{dir}/#{f}", "#{dir}/#{f}_backup")
    target = File::open("#{dir}/#{f}", "w+")
    result = []
    File.open("#{dir}/#{f}_backup").each do |line|
      if line =~ /^(.+p?)(?:1\d{2})(.+?\n)$/
        line = $1 + "290" + $2
      end
      result << line
    end
    target.write(result.join(""))
    target.close
    FileUtils.chmod(0755, target)
  end
end