Gets the link quality, frequency and ESSID of the given wireless network
interface. You can specify different format strings for the network being
-connected or not connected.
+connected or not connected. The quality is padded with leading zeroes by
+default; to pad with something else use +format_quality+.
The special interface name `_first_` will be replaced by the first wireless
network interface found on the system (excluding devices starting with "lo").
*Example format_down*: +W: down+
+*Example format_quality*: +"%03d%s"+
+
=== Ethernet
Gets the IP address and (if possible) the link speed of the given ethernet