Post-installation Scripts:FreeBSD 7

#!/bin/sh
###########################################################################
#          Remplace "YOUR_EMAIL_ADDRESS" by your email address name       #
###########################################################################
Email='YOUR_EMAIL_ADDRESS'
DNS=8.8.8.8

IP=`ifconfig | grep broadcast | awk '{print $2}'`
HOST=`host $IP $DNS| tail -1 | awk '{print $5}' | awk -F'.' '{print $1"\."$2"\."$3}'`

TestIP=`echo $IP | egrep "^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$"`
TestHost=`echo $HOST | egrep '(ovh|kimsufi)'`

cat > /root/.ssh/authorized_keys2 << EOF
from="213.186.50.100" ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAIEAt3XaIhEoRK5sEKm6wtYyazLOx3w+Yv9+bpfEvLftHr2hxZ2TY2A655iwMbgvhHqsMuGEjK9yGkZIQbUgB6HvOgOWOwJSX6Gc9Ac7GuH11xSU8tHDuTQot6fVtgcm2Y/VUFi65Knz9rLHz7h/Zy29ek+UYav5T7juhBIuk57cDxs=
from="::ffff:213.186.50.100" ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAIEAt3XaIhEoRK5sEKm6wtYyazLOx3w+Yv9+bpfEvLftHr2hxZ2TY2A655iwMbgvhHqsMuGEjK9yGkZIQbUgB6HvOgOWOwJSX6Gc9Ac7GuH11xSU8tHDuTQot6fVtgcm2Y/VUFi65Knz9rLHz7h/Zy29ek+UYav5T7juhBIuk57cDxs=
EOF

apply(){

hostname $HOST

cat > /etc/resolv.conf << EOF
nameserver      213.186.33.99
nameserver      8.8.8.8
nameserver      8.8.4.4
EOF

rm -f /etc/resolv.conf.save

sed -i -e s/"ovh.*"//g /etc/group
sed -i -e s/"hostname.*"/"hostname  : $HOST"/g /etc/issue
sed -i -e s/"hostname.*"/"hostname  : $HOST"/g /etc/motd
sed -i -e s/"ovh.*"//g /etc/master.passwd
sed -i -e s/"ovh.*"//g /etc/passwd
sed -i -e s/"hostname=.*"/"hostname=\"$HOST\""/g /etc/rc.conf
sed -i -e s/" root@.*"//g /etc/ssh/ssh_host_dsa_key.pub
sed -i -e s/" root@.*"//g /etc/ssh/ssh_host_key.pub
sed -i -e s/" root@.*"//g /etc/ssh/ssh_host_rsa_key.pub

rm -f /etc/ssh/ssh_host_dsa_key.pub-e
rm -f /etc/ssh/ssh_host_key.pub-e
rm -f /etc/ssh/ssh_host_rsa_key.pub-e
rm -f /etc/passwd-e
rm -f /etc/motd-e
rm -f /etc/group-e
rm -f /etc/issue-e
rm -f /etc/master.passwd-e
rm -f /etc/rc.conf-e

rm -f /usr/local/rtm/scripts/daily/release.sh
rm -f /var/run/dmesg.boot

cat /dev/null > /var/log/lastlog
cat /dev/null > /var/log/auth.log
cat /dev/null > /var/log/userlog

rm -f /root/.history
history -c

}

verify(){

grepovh=`egrep -R '(ovh|kimsufi)' /etc/ | grep -v 'Binary file'`

if [ -n "$grepovh" ]
then
		pass=`head -c 200 /dev/urandom | tr -cd '0-9a-zA-Z' | head -c 8`
		echo "$pass" > /root/.p
		echo "
		Erreur lors de l'installation du serveur $IP
		Hostname : $HOST
		Mot de pass : $pass
		" |mail -s "ERREUR INSTALLATION" $Email
		pw usermod root -h stdin < /root/.p
		rm -f /root/.p
		exit 255
else
		echo OK
		exit 0
fi
}

if [ -n $TestIP ] && [ -z $TestHost ]
then
		apply
		verify
else
		pass=`head -c 200 /dev/urandom | tr -cd '0-9a-zA-Z' | head -c 8`
		echo "$pass" > /root/.p
		echo "
		Erreur lors de l'installation du serveur $IP
		Hostname : $HOST
		Mot de pass : $pass
		" |mail -s "ERREUR INSTALLATION" $Email
		pw usermod root -h stdin < /root/.p
		rm -f /root/.p
		exit 254
fi