set-screensaver-message.rb

set-screensaver-message.rb

#!/usr/bin/env ruby

require 'optparse'

OptionParser.new do |opts|
  opts.on("-w", "--write", "Write new screensaver message") do |msg|
    old_msg = `defaults -currentHost read com.apple.ScreenSaver.Basic MESSAGE`
    system(
      'defaults',
      '-currentHost',
      'write',
      'com.apple.ScreenSaver.Basic',
      'MESSAGE',
      msg
    )

    puts "Replaced '#{old_msg}' with '#{msg}'"
  end
end.parse!