cpu temp widget in awesome wm

Question

I recently started using awesome wm version 4.2 and really like it; has significantly improved my workflow. I tried some themes like copycats and others but they're too fancy for me. I like the default configuration and been reading here: https://awesomewm.org/apidoc/index.html as well the rc.lua and theme.lua files from copycats and others and have implemented some of those; keybindings, layout manipulation, startup programs. I wanted to create a widget showing cpu temp, and I made it following intructions from here https://awesomewm.org/apidoc/classes/awful.widget.watch.html like this:

wibox.widget.textbox('  |  '),
awful.widget.watch(
  'bash -c "cat/sys/class/hwmon/hwmon0/device/temp1_input"', 15),
wibox.widget.textbox('  |  '),
awful.widget.watch(
  'bash -c "cat /sys/class/hwmon/hwmon0/device/temp3_input"', 15),

It works, but it shows big numbers ie 43000 instead of 43. How can I change that? and if possible 43°C.

Answer 1

If you get the correct number and just want to divide it by 1000, you can use the optional callback :

awful.widget.watch('bash -c "cat /sys/class/hwmon/hwmon0/device/temp1_input"', 15, 
  function(widget, s) widget:set_text(tonumber(s)/1000) end)

Answer 2

Just use sensors , it is easier. I achieved this by creating a widget that updates to the value of sensors :

local wibox = require("wibox")
local awful = require("awful")

local temprature = wibox.widget {
    widget = awful.widget.watch('bash -c "sensors | grep CPU |     awk \'{print $2}\' | se
d \'s/C/C   /\'"', 5),
}

local temprature_clr = wibox.widget.background()
temprature_clr:set_widget(temprature)
temprature_clr:set_fg("#e5a75b")

return temprature_clr