Connect WPA2 on linux

And so i have a linux that is far from the router.
And i need to connect it via wifi.

apt-get install 

Know your interface first...
nano /etc/network/interfaces

auto wlan0

iface lo inet loopback

iface eth0 inet dhcp

allow-hotplug wlan0

iface wlan0 inet static ( Else use iface wlan0 inet dhcp )

address 192.168.1.155

netmask 255.255.255.0

gateway 192.168.1.1

wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf

iface default inet dhcp

nano /etc/wpa_supplicant/wpa_supplicant.conf

ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev

update_config=1

network={

ssid="NYO_WWWP"

psk="topsecret"

proto=RSN

key_mgmt=WPA-PSK

pairwise=CCMP

auth_alg=OPEN

}