federico@federico-laptop:~$ sudo iwlist wlan0 scan
wlan0     Scan completed :
          Cell 01 - Address: 00:1F:1F:EB:98:50
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=37/70  Signal level=-73 dBm
                    Encryption key:on
                    ESSID:"bubba1"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 9 Mb/s
                              18 Mb/s; 36 Mb/s; 54 Mb/s
                    Bit Rates:6 Mb/s; 12 Mb/s; 24 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=000000502ce57165
                    Extra: Last beacon: 956ms ago
                    IE: Unknown: 0006627562626131
                    IE: Unknown: 010882848B961224486C
                    IE: Unknown: 030101
                    IE: Unknown: 2A0104
                    IE: Unknown: 32040C183060
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (1) : TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00
                    IE: Unknown: DD07000C4304000000
          Cell 02 - Address: 00:1A:92:E4:2F:BF
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=30/70  Signal level=-80 dBm
                    Encryption key:off
                    ESSID:"default"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
                              24 Mb/s; 36 Mb/s; 54 Mb/s
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=0000004ef11cd187
                    Extra: Last beacon: 1124ms ago
                    IE: Unknown: 000764656661756C74
                    IE: Unknown: 010882848B962430486C
                    IE: Unknown: 030101
                    IE: Unknown: 2A0100
                    IE: Unknown: 2F0100
                    IE: Unknown: 32040C121860
                    IE: Unknown: DD060010180201F0
          Cell 03 - Address: 00:1A:70:96:AD:14
                    Channel:13
                    Frequency:2.472 GHz (Channel 13)
                    Quality=37/70  Signal level=-73 dBm
                    Encryption key:on
                    ESSID:"linksys"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 22 Mb/s
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s
                              36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=000000497ce27156
                    Extra: Last beacon: 164ms ago
                    IE: Unknown: 00076C696E6B737973
                    IE: Unknown: 010582848B962C
                    IE: Unknown: 03010D
                    IE: Unknown: 2A0100
                    IE: Unknown: 32080C1218243048606C
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (1) : TKIP
                        Authentication Suites (1) : PSK

federico@federico-laptop:~$