Printer Job Language sending commands

printer_pjl.rb

#! /usr/bin/ruby

require 'socket'
# use printer IP address here
sock = TCPSocket.new('000.000.000.000', '9100')

# Start
sock.write "\u{001B}%-12345X@PJL\n"

# commands
sock.write "@PJL RDYMSG DISPLAY=\"Hello\"\n"
sock.write "@PJL Echo Acme # 123\n"
sock.write "@PJL USTATUS DEVICE = ON \n"

# End
sock.write "\u{001B}%-12345X\r\n"

# sock.each_line do |line|
#   puts line
# end

sock.close