move netdevice setting to configuration file

config.sh

@@ -4,6 +4,9 @@
 # modules location
 . "$HOME/.config/candybar/modules.sh"
 
+# network device, needed for upload and download modules
+export netdevice=""
+
 # module list. uncomment to enable.
 # re-arrange to change order.
 # module name		icon/prefix	suffix

modules.sh

@@ -60,8 +60,6 @@ module_todo() {
 	[ "$todooutput" = "" ] || export bar="${bar}${1}${todooutput}${2}"
 }
 
-export netdevice=""
-
 module_upload() {
 	# https://github.com/speediegamer/xshbar-plugins/blob/main/netstat.plugin
 	up="$(cat /sys/class/net/${netdevice}/statistics/rx_bytes | awk '{$1=$1/1024000; print $1"B";}' | tail -n 1)"