Find out which 32-bit apps won't make the leap to Catalina

32bitapps.rb

#!/usr/bin/env ruby

begin
  require 'plist'
rescue LoadError
  abort "Missing dependency. Please run: `gem install plist` and try again."
end

raw_output = `system_profiler SPApplicationsDataType -xml -detailLevel mini`

profiler_report = Plist.parse_xml(raw_output)

apps = profiler_report.dig(0, '_items')

puts "32-bit apps"
puts "==========="

apps.each do |app|
  next if app['has64BitIntelCode'] == 'yes'
  puts "* #{app['_name']} #{app['version']} – #{app['path']}"
end

instructions.md

Safest

Visit the Raw link on the 32bitapps.rb above and grab the URL.

From Terminal, run

gem install plist
curl RAW_URL_PATH_FROM_STEP_ABOVE | ruby

Simplest

gem install plist
curl https://gist.githubusercontent.com/Aupajo/8a0d2345d11b63156cbabdd76a800660/raw/d1931daeeff7651e2660f5c70c35692b1a433f5c/32bitapps.rb | ruby

Customisable

Download 32bitapps.rb, customise, run:

gem install plist
ruby 32bitsapp.rb