config_wireless() {
  interfaces=$(iwinfo 2> /dev/null | sed '/^wlan/!d; s/ .*//g; /-/d')
  for interface in ${interfaces}
  do
    echo "multigraph wireless_${interface}
graph_title WLAN ${interface} AP Statistics
graph_vlabel Strength (dBm)
graph_category network
graph_scale no
signal.label Signal
noise.label Noise"
  done
  interfaces=$(iwinfo 2> /dev/null | sed '/^wlan/!d; s/ .*//g')
  for interface in ${interfaces}
  do
    echo "multigraph wireless_assoc_${interface/-/_}
graph_title WLAN ${interface} associations
graph_vlabel Clients
graph_args --lower-limit 0
graph_category network
graph_scale no
clients.label Clients"
  done
}
fetch_wireless() {
  interfaces=$(iwinfo 2> /dev/null | sed '/^wlan/!d; s/ .*//g; /-/d')
  for interface in ${interfaces}
  do
    echo "multigraph wireless_${interface}"
    iwinfo ${interface} info | sed -r 's/unknown/0 dBm/g; /Signal.*Noise/!d; s/^.* Signal: ([-0-9]+) dBm  Noise: ([-0-9]+) dBm/signal.value \1\nnoise.value \2/'
  done
  interfaces=$(iwinfo 2> /dev/null | sed '/^wlan/!d; s/ .*//g')
  for interface in ${interfaces}
  do
    echo "multigraph wireless_assoc_${interface/-/_}"
    echo "clients.value $(iwinfo ${interface} assoc | grep -c SNR)"
  done
}