move clients to screen

brightness/test.lua

@@ -0,0 +1,15 @@
+local base = "/sys/devices/pci0000:00/0000:00:02.0/drm/card1/card1-eDP-1/intel_backlight/"
+
+function readnum(file)
+  local f = io.open(base .. file,'r')
+  local n = f:read("*number")
+  f:close()
+  return n
+end
+
+local cur = readnum("brightness")
+local min = 0
+local max = readnum("max_brightness")
+
+print( string.format("[%s,%s] %s", min, max, cur) )
+