Put all WLAN interfaces into monitor mode

monitor_mode.bash

#!/bin/bash

for interface in $(iw dev | grep wlan | grep -v mon | awk '{ print $2 }')
do
        mon_interface="${interface}mon"
        echo "Interface: $interface"
        echo "Monitor interface: $mon_interface"
        ip link set ${interface} down
        iw dev ${interface} set type monitor
        ip link set ${interface} name "${mon_interface}"
        ip link set "${mon_interface}" up
done