sudo apt-get install wireless-tools wpasupplicant
sudo ifconfig wlan0 up
iwconfig
sudo iwlist scan
wpa_passphrase YOURSSID YOURWIFIPASSWORD
network={
ssid='YOURSSID'
#psk='YOURWIFIPASSWORD'
psk=fe727aa8b64ac9b3f54c72432da14faed933ea511ecab1 5bbc6c52e7522f709a
}
sudo nano /etc/network/interfaces
auto wlan0
iface wlan0 inet dhcp
netmask 255.255.255.0
gateway 192.168.1.1
wpa-driver wext
wpa-ssid MYPLACE
wpa-ap-scan 1
wpa-proto WPA
wpa-pairwise CCMP
wpa-group CCMP
wpa-key-mgmt WPA-PSK
wpa-psk 71c81a844973ae7bb1243141e5caa7b6bb0e2d7eetcetcetc
#auto eth0
#iface eth0 inet dhcp
sudo nano /etc/wpa_supplicant.conf
ap_scan=1
ctrl_interface=/var/run/wpa_supplicant
network={
ssid='MYPLACE'
scan_ssid=0
psk=71c81a844973ae7bb1243141e5caa7b6bb0e2d7eetcetcetc
key_mgmt=WPA-PSK
proto=WPA
pairwise=CCMP
group=CCMP
}