Remove duplicate .mobileprovision files locally on your machine

Fastfile

# If you prefer to have this in yor fastfile

fastlane_version "1.90.0"
default_platform :ios

platform :ios do

  lane :duplicates do |options|
    remove_local_duplicate_profiles
  end

  def remove_local_duplicate_profiles
    entries = {}
    path = File.expand_path '~/Library/MobileDevice/Provisioning Profiles'
    puts "Searching through locally installed mobileprovision files..."
    Dir.glob("#{path}/*.mobileprovision") do |item|
      info = Helper.backticks "/usr/libexec/PlistBuddy -c 'Print :CreationDate' -c 'Print :Name' -c 'Print :TeamName' /dev/stdin <<< $(security cms -D -i '#{item}')", print: false
      values = info.split "\n"
      entry = {
        :creation_date => values[0],
        :name => values[1],
        :team => values[2],
        :path => item
      }
      key = "#{entry[:team]} > #{entry[:name]}"
      same_key_entries = entries[key]
      unless same_key_entries
        same_key_entries = []
        entries[key] = same_key_entries
      end
      same_key_entries.push entry
    end
    puts "...done!"

    dupes = entries.find_all { |k,profiles| profiles.count > 1 }
    dupes.each { |k,profiles|
      sorted = profiles.sort_by { |a| a[:creation_date] }
      keeping = sorted[0]
      puts "Keeping profile:     '#{keeping[:name]}' (#{File.basename keeping[:path]}) #{keeping[:creation_date]}"
      sorted.drop(1).each { |entry|
        puts " > Deleting profile: '#{entry[:name]}' (#{File.basename entry[:path]}) #{entry[:creation_date]}"
        Helper.backticks "rm '#{entry[:path]}'"
      }
    }
  end
  
end

remove_duplicates.rb

# Generic / not related to Fastlane

entries = {}
path = File.expand_path '~/Library/MobileDevice/Provisioning Profiles'
puts "Searching through locally installed mobileprovision files..."
Dir.glob("#{path}/*.mobileprovision") do |item|
  info = `/usr/libexec/PlistBuddy -c 'Print :CreationDate' -c 'Print :Name' -c 'Print :TeamName' /dev/stdin <<< $(security cms -D -i '#{item}')`
  values = info.split "\n"
  entry = {
    :creation_date => values[0],
    :name => values[1],
    :team => values[2],
    :path => item
  }
  key = "#{entry[:team]} > #{entry[:name]}"
  same_key_entries = entries[key]
  unless same_key_entries
    same_key_entries = []
    entries[key] = same_key_entries
  end
  same_key_entries.push entry
end
puts "...done!"

dupes = entries.find_all { |k,profiles| profiles.count > 1 }
dupes.each { |k,profiles|
  sorted = profiles.sort_by { |a| a[:creation_date] }
  keeping = sorted[0]
  puts "Keeping profile:     '#{keeping[:name]}' (#{File.basename keeping[:path]}) #{keeping[:creation_date]}"
  sorted.drop(1).each { |entry|
    puts " > Deleting profile: '#{entry[:name]}' (#{File.basename entry[:path]}) #{entry[:creation_date]}"
    `rm '#{entry[:path]}'`
  }
}