Display network name in xmobar

You probably want the Wireless plugin which comes with xmobar

http://projects.haskell.org/xmobar/#wireless-interface-args-refreshrate

In your config file, you'd have something like this in the commands list:

Run Wireless "wlan0" [ "-t", "<essid>" ] 10

If your interface is named wlan0 Then you can add this line

Run Wireless "wlan0" [ "-t", "<essid>" ] 10

to your commands list.

Access it in the template string through %wlan0wi%