kextinfo.rb

# Kext info dump
# (c) Patrick Gill, 2019

first_arg, *the_rest = ARGV

Dir.chdir "/Volumes/Macintosh HD/System/Library/Extensions"
# Dir.chdir "/Library/Extensions"

puts "#Path, " + Dir.pwd

def kext_ident(path)
  if File.exist?(path + "/Contents/Info.plist")
    plistpath = path + "/Contents/Info.plist"
  elsif File.exist?(path + "/Info.plist")
    plistpath = path + "/Info.plist"
  else
    plistpath = "unknown"
  end

  unless plistpath == "unknown"
    info_plist = File.read(plistpath) # read binary plist
    IO.popen('plutil -convert xml1 -r -o - -- -', 'r+') {|f|
      f.write(info_plist)
      f.close_write
      info_plist = f.read # xml plist
    }

    # Now info_plist is an xml string. To quickly extract one property you can use regex:
    app_bundle = info_plist.scan(/<key>CFBundleIdentifier<\/key>\s+<string>(.+)<\/string>/).flatten.first
  else
    app_bundle = "unknown"  
  end
  
  return app_bundle
end

Dir.glob("*.kext") {|item|
  next if item == '.' or item == '..'
  # do work on real items
  puts item + ", " + kext_ident(item)
  # Contents
}  

# puts first_arg + "\t\t" + kext_ident(first_arg)