adding togglemonitor script

.config/sxhkd/sxhkdrc

@@ -45,6 +45,8 @@ super + x
 	xournalpp
 #super + shift + z taken by i3
 
+super + F4
+	togglemonitor
 super + F5
 	toggletouchpad
 super + F6

.local/bin/tools/togglemonitor

@@ -0,0 +1,7 @@
+#!/bin/sh
+# toggle external monitor
+intern=LVDS-1
+extern=HDMI-1
+(xrandr | grep "$extern disconnected") && exit
+(xrandr --listactivemonitors | grep $extern) || (xrandr --output $extern --right-of $intern --auto & exit)
+(xrandr --listactivemonitors | grep $extern) && xrandr --output $extern --off