CPUの温度をSlackに投げる

CPU_Temperature.rb

require 'net/http'
require 'uri'
require File.dirname(__FILE__) + "/slack" # token

class Slack
  def postMessage(message)
    text = message
    username = "cputemp"
    icon_url = "https://pbs.twimg.com/profile_images/802450920269197312/ziE5tTn4.jpg" # -> twitter my icon

    params = URI.encode_www_form({token: $token, channel: $channel_cpu,text: text,username: username, icon_url: icon_url,as_user: false})

    uri = URI.parse("https://slack.com/api/chat.postMessage?#{params}")

    Net::HTTP.get(uri)
  end
end

temp = ["cat /sys/class/thermal/thermal_zone0/temp","cat /sys/class/thermal/thermal_zone1/temp"]

# p "℃".unpack("U*") # -> 8451

post = Slack.new

message = ""

temp.each_with_index do |command,index|
  m = `#{command}` # -> "27800\n"
  m.slice!("\n") # -> "27800"
  m = m.to_i/1000.to_f # -> 27.8
  m =  "cpu" + index.to_s + " : " +  m.to_s + [8451].pack("U*") # -> "cpu0 : 27.8℃"
  message << m
  message << ", " if index.zero?
end

post.postMessage(message)