gistfile1.txt

uptime.lua:
==========================

function init()
    barWidget.setUpdateInterval(60000)

    update()
end

function update()
    local command = 'read -r up _ < /proc/uptime; up=${up%.*}; echo "up $((up/86400)) days $(((up%86400)/3600)):$(((up%3600)/60)):$((up%60))"'

    noctalia.runAsync(command, function(result)

        if result and result.stdout and result.stdout ~= "" then

            local formatted_text = result.stdout:gsub("%s*$", "")
            local vertical_layout = formatted_text:gsub(".", "%0\n"):gsub("\n$", "")
            if barWidget.isVertical() == true
              then
                barWidget.setText(vertical_layout)
              else
                barWidget.setText(formatted_text)
            end

        end
    end)
end

en.json:
=========================

{
  "title": "Uptime",
  "settings.uptime_dir.label": "Label",
  "settings.uptime_dir.description": "Text shown in the bar.",
  "settings.glyph.label": "Bar glyph"
}