reminder script in ruby

remind_me

#!/usr/bin/env ruby

require 'chronic'
require 'time'
require 'securerandom'

abort('notify-send not installed') if `which notify-send`.empty?

ts = ARGV.join(' ')
t = Chronic.parse(ts)
abort("'#{ts}' not understood") unless t
puts "What should I remind you about at #{t.strftime('%D %R')}?"
print '> '
msg = STDIN.gets.chomp.gsub("'",'"')

tmp_name = "/tmp/#{t.iso8601.gsub(/\W/,'_')}_#{SecureRandom.uuid}"
File.write tmp_name, <<-EOS
#!/usr/bin/env ruby
loop do
  if Time.now.to_i >= #{t.to_i}
    `notify-send -i /usr/share/icons/Humanity/status/128/info.svg -u critical '#{msg}'`
    File.delete('#{tmp_name}')
    exit
  else
    sleep 2
  end
end
EOS

puts [
  'sure thing!',
  'will do :)',
  'no problem!',
  'okilly dokilly'
].sample

`nohup ruby #{tmp_name} >/dev/null 2>&1&`