I found a bug in current wpa_supplicant and just building a new version. Hopefully it will work as expected with the CLI WiFi tool. While it is a small script, it works fine and you can manage WIFi connection just fine.
NETWORKMANAGER or WICD are heavy applications and not on the top of the priority list. Lets wait for working wpa_supplicant and wifi.sh first.
Regarding wired connection, if you are running X use ControlPanel's network setup tool.