You need at least ifconfig, iwconfig, wpa_supplicant and dhclient on your system.
Try to use wicd or NetworkManager (depending on which is installed).
If you have none of then and must do everything manually, you should:
1) bring the wireless interface up with ifconfig wlan0 up
2) list the available network interfaces with iwlist wlan0 ap
One you know the essid used by your university, you should start writing a wpa_supplicant.conf file.
type man 5 wpa_supplicant.conf to see example configurations and syntax. You will need to insert there
the Security, Authentication, certificate, username and info.
3) With the right WPA configuration, you should connect to your network with iwconfig wlan0 essid ...
4) after that you should use dhclient wlan0 to connect.
You may not succeed at the first try, and you may have to look at error messages in /var/log/ to understand
what went wrong.