How can I see using command-line whether I am connected to network using eth0, eth1 or wln0 etc?
Well, to elaborate, I have a desktop sidebar which I installed using program "conky". This sidebar has meter that shows internet speed. Since I am not using eth0, I need to make a minor change in ~/.conkyrc file. I need to replace "eth0" with whatever network is being used by my wireless card to connect to internet (via a router).