#!/bin/bash
newssidok=0
while [ "$newssidok" -ne 1 ]
do
	echo -n "New SSID: "
	read newssid
	if [ "$newssid" = "" ]
	then
		echo "SSID cannot be blank. Try again or hit <ctrl>-c to abort."
	else
		newssidok=1
	fi
done
sed -i "/ssid=.*/c ssid=$newssid" /etc/hostapd/hostapd.conf
systemctl restart hostapd