2007/11/10更新

対応バージョン: 6,8

iwlistを使用する。

例) アクセスポイントが2箇所存在する場合

# iwlist eth1 scan
eth1  Scan completed :
      Cell 01 - Address: 00:0D:02:54:85:AD
                ESSID:"WARPSTAR-3DA816"
                Protocol:IEEE 802.11bg
                Mode:Master
                Channel:7
                Encryption key:on
                Bit Rate:54Mb/s
                Extra: Rates (Mb/s): 1 2 5.5 9 11 6 12 18 24 36 48 54
                Quality:0/100  Signal level:-72 dBm  Noise level:-256 dBm
                Extra: Last beacon: 1494ms ago
      Cell 02 - Address: 00:11:24:01:B4:A7
                ESSID:"foo-net"
                Protocol:IEEE 802.11bg
                Mode:Master
                Channel:2
                Encryption key:off
                Bit Rate:54Mb/s
                Extra: Rates (Mb/s): 1 2 5.5 6 9 11 12 18 24 36 48 54
                Quality:0/100  Signal level:-83 dBm  Noise level:-256 dBm
                Extra: Last beacon: 597ms ago