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mini:/tmp# iwlist scan
lo        Interface doesn't support scanning.

eth0      Interface doesn't support scanning.

sit0      Interface doesn't support scanning.

wlan0     Scan completed :
          Cell 01 - Address: 00:16:B6:18:2D:72
                    ESSID:"Bouba"
                    Frequency:2.442 GHz (Channel 0)
                    Mode:Managed
                    Quality:0/248  Signal level:-72 dBm  Noise level:-256 dBm
                    Encryption key:on
          Cell 02 - Address: 00:16:41:A5:8C:B6
                    ESSID:"Livebox-0b7a"
                    Frequency:2.457 GHz (Channel 0)
                    Mode:Managed
                    Quality:0/248  Signal level:-96 dBm  Noise level:-256 dBm
                    Encryption key:on
          Cell 03 - Address: 00:07:CB:57:98:BB
                    ESSID:"home"
                    Frequency:2.462 GHz (Channel 0)
                    Mode:Managed
                    Quality:0/248  Signal level:-82 dBm  Noise level:-256 dBm
                    Encryption key:on
                    IE: WPA Version 1
                        Group Cipher : TKIP 
                        Pairwise Ciphers (2) : TKIP CCMP 
                        Authentication Suites (1) : PSK  
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP 
                        Pairwise Ciphers (2) : TKIP CCMP 
                        Authentication Suites (1) : PSK  
                    IE: Unknown: 0000
                    IE: Unknown: 0000
                    IE: Unknown: 0000
                    IE: Unknown: 0000
                    IE: Unknown: 0000
                    IE: Unknown: 0000
          Cell 04 - Address: 00:16:B6:BD:1D:85
                    ESSID:"linksys_SES_33126"
                    Frequency:2.462 GHz (Channel 0)
                    Mode:Managed
                    Quality:0/248  Signal level:-81 dBm  Noise level:-256 dBm
                    Encryption key:on
                    IE: WPA Version 1
                        Group Cipher : CCMP 
                        Pairwise Ciphers (1) : CCMP 
                        Authentication Suites (1) : PSK  
          Cell 05 - Address: 00:07:CB:58:79:C0
                    ESSID:"dalui21"
                    Frequency:2.462 GHz (Channel 0)
                    Mode:Managed
                    Quality:0/248  Signal level:-86 dBm  Noise level:-256 dBm
                    Encryption key:on
          Cell 06 - Address: 00:17:33:27:E4:01
                    ESSID:"NEUF_E400"
                    Frequency:2.437 GHz (Channel 0)
                    Mode:Managed
                    Quality:0/248  Signal level:-91 dBm  Noise level:-256 dBm
                    Encryption key:on
                    IE: WPA Version 1
                        Group Cipher : TKIP 
                        Pairwise Ciphers (2) : CCMP TKIP 
                        Authentication Suites (1) : PSK  
          Cell 07 - Address: 00:03:C9:1B:13:CD
                    ESSID:"ALICE-1B13C2"
                    Frequency:2.462 GHz (Channel 0)
                    Mode:Managed
                    Quality:0/248  Signal level:-110 dBm  Noise level:-256 dBm
                    Encryption key:on

mini:/tmp# iwconfig 
lo        no wireless extensions.

eth0      no wireless extensions.

sit0      no wireless extensions.

wlan0     IEEE802.11 b/g  ESSID:off/any  Nickname:"Winbond W89C35"
          NWID:off/any  Mode:Auto  Bit Rate=1 Mb/s   Tx-Power:0 dBm   
          Sensitivity=18/3  
          Retry:on   RTS thr=2347 B   Fragment thr:2346 B   
          Encryption key:off
          Power Management:off
          
mini:/tmp#