######################### Ruby Script #########################

require 'fcntl'

begin
	fd = IO.sysopen('/dev/ttyUSB0', Fcntl::O_RDWR)
	sleep 0.01 while true
rescue SignalException
	File.open('/tmp/x'.freeze, 'a').puts($!.full_message)
	sleep 0.01
	puts 'hi'
	retry
rescue Exception
	retry
end


######################### Systemd Service #########################
[Unit]
Description=Arduino OLED as a Ultra Light-Weight System Monitor

[Service]
# ExecStart=/bin/ruby /root/.local/share/gem/ruby/3.0.0/bin/blink-tm
ExecStart=/bin/ruby /tmp/p.rb
Type=simple
Restart=on-failure
User=root
Group=root

[Install]
WantedBy=multi-user.target