Scan wifi without nmcli

wifi.sh

#!/usr/bin/env bash
#
# Scan availible wifi networks

wifi=$(ifconfig -a | grep wl | cut -d' ' -f1)

ifconfig $wifi up
scan=$(iwlist $wifi scan)
essid=$(echo "$scan" | grep ESSID | cut -f2 -d":" | tr -d '"')
encryption=$(echo "$scan" | grep "Encryption key" | cut -f2 -d":")
bitrate=$(echo "$scan" | grep "Bit Rates" | cut -f2 -d":")

i=1
json=$(echo "["
while read -r ssid; do
  echo "{ \"ssid\": \"$ssid\","
  echo "\"security\": \""$(echo "$encryption" | sed "${i}q;d")"\","
  echo "\"bitrate\": \""$(echo "$bitrate" | sed "${i}q;d")"\" },"
  ((i++)) 
done <<< "$essid"
echo "]"
)

echo $json | sed -z 's/\(.*\),/\1/'