Shell script for switching wifi channel using hopping

Using the below script we tries to connect to different wifi channels of hotspot using iwconfig command.

 $ vim wifi_channel_hop.sh 

#!/bin/bash
IFACE=wlan0
IEEE80211bg="1 2 3 4 5 6 7 8 9 10 11"
IEEE80211bg_intl="$IEEE80211b 12 13 14"
IEEE80211a="36 40 44 48 52 56 60 64 149 153 157 161"
IEEE80211bga="$IEEE80211bg $IEEE80211a"
IEEE80211bga_intl="$IEEE80211bg_intl $IEEE80211a"
while true ;
do
        for CHAN in $IEEE80211bg ;
                do
                echo "Switching to channel $CHAN"
                sudo iwconfig $IFACE channel $CHAN
                sleep 1
                done
done

Reference: https://github.com/brannondorsey/sniff-probes/blob/master/sniff-probes.sh