Made many enhancements and also closes issue #5

[nandub]

KM4ACK,

Please review my changes and see if you agree with them.

73,
Nando - KI5LKF

[km4ack]

First, thanks for the help on this. Networking isn't my strong suit and I haven't worked on this script or the new version in quite a while. I don't know how much time I can dedicate to this during December. I have family that drifts in and out of town during the holiday season. If you can explain the things below, I will go ahead and merge to the dev branch for now and test over the coming weeks.

1. What is the difference between these two line?
   sudo echo "nohook wpa_supplicant" >> /etc/dhcpcd.conf
   sudo su -c 'echo "nohook wpa_supplicant" >> /etc/dhcpcd.conf'

2. Not sure about this change. Maybe I am missing something.
   CIP=$(ip address show dev wlan0 | grep -v inet6 | grep inet | awk '{ print $2 }' | sed 's//24//')
   One of my pi's returns the correct address in hotspot mode (10.10.10.10). The other isn't in hotspot mode and returns 10.163.254.205/28
   I believe it should return 10.163.254.205. Mod the last sed?

73, de KM4ACK

[nandub]

You very welcome. Thanks for the feedback. I will make the changes based on your feedback below for no 2.

1- What is the difference between these two line?
sudo echo "nohook wpa_supplicant" >> /etc/dhcpcd.conf
^^ this line fails on my rpi2 with: bash: /etc/dhcpcd.conf: Permission denied
sudo su -c 'echo "nohook wpa_supplicant" >> /etc/dhcpcd.conf'
^^ however this work succeeds. I cannot remember the website that showed me this trick though.

2- Not sure about this change. Maybe I am missing something.
CIP=$(ip address show dev wlan0 | grep -v inet6 | grep inet | awk '{ print $2 }' | sed 's//24//')
One of my pi's returns the correct address in hotspot mode (10.10.10.10). The other isn't in hotspot mode and returns 10.163.254.205/28
I believe it should return 10.163.254.205. Mod the last sed?
^^ I guess I miss 28. I will change the code to cover 28.

73, de KI5LKF

[nandub]

@km4ack I made the changes suggested by another user, but lost track of who after making the changes.