update-etcissue.sh

#!/bin/sh

#Get the first IP from ifconfig.  Ignore loopback.
SYSIP=$(ifconfig | awk -F'[: ]+' '/inet addr/ {print $4}' | grep -v "127.0.0.1" | head -n1)

if [ -z "${SYSIP}" ]; then
	#THE SKY IS FALLING!
	#Okay, not really.  Couldn't determine IP address.
	TEXT="To configure networking, login as 'root' and run the \`setup\` command."
else
	if [ -f /var/lib/asterisk/static-http/index.html ]; then
		#Asterisk-GUI
		# Get the bindport from http.conf.  Use 8088 if unset.
		p=`awk -F'[= \t]' '/^bindport[ \t]?=[ \t]?/ {print $NF}' /etc/asterisk/http.conf`
		PORT=${p:-8088}
		up=`awk -F'[= \t]' '/^prefix[ \t]?=[ \t]?/ {print $NF}' /etc/asterisk/http.conf`
		URIPREFIX=${up:+"${up}"/}
		TEXT="To configure AsteriskNOW with Asterisk-GUI, point your web browser to http://${SYSIP}:${PORT}/${URIPREFIX}static/config/index.html"
	elif [ -d /var/www/html/admin/ ]; then
		#FreePBX
		TEXT="To configure AsteriskNOW with FreePBX, point your web browser to http://${SYSIP}/"
	else
		#No GUI
		TEXT="The IP address of your AsteriskNOW system is ${SYSIP}"
	fi
fi

cat /etc/asterisknow-version > /etc/issue
echo -e "\n${TEXT}\n" >> /etc/issue