pi@raspberrypi:~ $ iwconfig
wlan0     IEEE 802.11bgn  ESSID:"superCoolNetwork"
          Mode:Managed  Frequency:2.412 GHz  Access Point: 54:E6:FC:FD:1E:5A
          Bit Rate=18 Mb/s   Tx-Power=31 dBm
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:on
          Link Quality=31/70  Signal level=-79 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

lo        no wireless extensions.

eth0      no wireless extensions.

pi@raspberrypi:~ $ iwlist wlan0 scan
wlan0     Scan completed :
          Cell 01 - Address: 54:E6:FC:FD:1E:5A
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=35/70  Signal level=-75 dBm
                    Encryption key:on
                    ESSID:"superCoolNetwork"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              12 Mb/s; 24 Mb/s; 36 Mb/s
                    Bit Rates:9 Mb/s; 18 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=0000000000000000
                    Extra: Last beacon: 538050ms ago
                    IE: Unknown: 00107375706572436F6F6C4E6574776F726B
                    IE: Unknown: 010882848B960C183048
                    IE: Unknown: 030101
                    IE: Unknown: 050400010000
                    IE: Unknown: 2A0100
                    IE: Unknown: 32041224606C
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : TKIP CCMP
                        Authentication Suites (1) : PSK
                       Preauthentication Supported
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : TKIP CCMP
                        Authentication Suites (1) : PSK