-#+begin_src bash
-perc=$(dbus-send --print-reply=literal --system \
- --dest=org.freedesktop.UPower \
- /org/freedesktop/UPower/devices/battery_BAT0 \
- org.freedesktop.DBus.Properties.Get \
- string:org.freedesktop.UPower.Device \
- string:'Percentage' | awk '{print $3}')
-
-state=$(dbus-send --print-reply=literal --system \
- --dest=org.freedesktop.UPower \
- /org/freedesktop/UPower/devices/battery_BAT0 \
- org.freedesktop.DBus.Properties.Get \
- string:org.freedesktop.UPower.Device \
- string:'State' | awk '{print $3}')
+#+begin_src sh
+dbus_send() {
+ label=$1
+ dbus-send --print-reply=literal --system \
+ --dest=org.freedesktop.UPower \
+ /org/freedesktop/UPower/devices/battery_BAT0 \
+ org.freedesktop.DBus.Properties.Get \
+ string:org.freedesktop.UPower.Device \
+ string:"${label}" | awk '{print $3}'
+}
+
+perc=$(dbus_send 'Percentage')
+state=$(dbus_send 'State')