Get the nwid of the specified wlan card or the first found

wlan_status

#!/bin/sh

nic="$1"

function getNwid {
  ifconfig $1 | grep ieee80211 | cut -d : -f 2 | rev | cut -d ' ' -f 5- | rev | cut -d ' ' -f 3- | tr -d '"'
}

if [ ${nic:-empty} = empty ]
then
  wnics_up=$(ifconfig wlan | grep UP | cut -d ':' -f 1)
  if [ ${wnics_up:-empty} = empty ]
  then
    wnics=$(ifconfig wlan | cut -d ':' -f 1)
    for wnic in $wnics
    do
      echo $wnic: Not connected
      exit
    done
  else
    for wnic in $wnics_up
    do
      nwid=$(getNwid $wnic)
      echo $wnic: $nwid
      exit
    done
  fi
fi