#!/bin/bash
# references the interface
wlaninterface=wlan0
# add the mon to the inferface name for use with airmon-ng and airodump-ng
m=mon
i=$wlaninterface$m
# sets the base file name for the wireless survey 
recon=/DaCaps/scouted
# sets the file name for the pcap file to write to
pcapfile=/DaCaps/DaCapFile
# sets the length of time to run the survey for - in seconds
recontime=120s
# sets the length of time to run the packet capture for - in seconds
capturetime=3600s
# general house cleaning to remove previous captures
rm $recon*.csv &> /dev/null
rm $pcapfile*.cap &> /dev/null
# setting wlan0 into monitor mode
airmon-ng check kill &
airmon-ng start $wlaninterface &
# running the wireless survey for the defined amount of time then stops the process
airodump-ng -w $recon --output-format csv $i &> /dev/null &
sleep $recontime
kill $!
# finds the open Wi-Fi network with the most active traffic and gets the channel number
channel=$(grep -a 'OPN' $recon*.csv | sort -nrk11 | tail -1 | awk '{print $6}')
# removes the comma from the output of the previous line
ch=${channel::-1}
#running the packet capture for the defined amount of time then stops the process
airodump-ng --encrypt OPN --output-format pcap --channel $ch -w $pcapfile $i &> /dev/null & 
sleep $capturetime
kill $!
# our work here is done, time to take a nap
Shutdown -P now