~$ iwconfig
lo no wireless extensions.
irda0 no wireless extensions.
eth0 no wireless extensions.
wifi0 no wireless extensions.
ath0 IEEE 802.11g ESSID:"" Nickname:""
Mode:Managed Frequency:2.437 GHz Access Point: Not-Associated
Bit Rate:0 kb/s Tx-Power:14 dBm Sensitivity=1/1
Retry:off RTS thr:off Fragment thr:off
Power Management:off
Link Quality=0/70 Signal level=-93 dBm Noise level=-93 dBm
Rx invalid nwid:19022 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0