reset.sh

#!/bin/bash

echo
echo
echo "Ubuntu Server Deployment System Reset Script"
echo


# Check that this distribution is Ubuntu
if uname -v | grep -qvi ubuntu
then
	echo "This script is meant for Ubuntu distributions only."
	exit 1
fi


# Check if root
if [[ $UID != 0 ]]
then
	echo "You are not root. This script must be run with root permissions."
	exit 1
fi


# Filepath
root=$(dirname $(readlink -f $0))


# Get settings
echo
echo -n "Please enter a hostname: "
read myhostname
echo -n "Please enter a domain: "
read mydomain


# Confirmation
echo
echo "Please confirm your entries:"
echo "	Hostname: $myhostname"
echo "	Domain: $mydomain"
echo -n "Are these correct [y/N]? "
read confirm
echo

if [[ ! "$confirm" =~ ^[yY]([eE][sS])?$ ]]
then
	echo "Reset Cancelled."
	exit 1
fi



# Generate /etc/hostname
echo "Generating /etc/hostname"
sudo echo $myhostname > /etc/hostname


# Generate /etc/hosts
# hosts.template
# {IP} {HOSTNAME} {DOMAIN} {HOSTNAME}
echo "Generating /etc/hosts"
sudo cat << EOF > /etc/hosts
127.0.0.1	localhost
127.0.0.1	$myhostname.$mydomain	$myhostname

# The following lines are desirable for IPv6 capable hosts
::1     localhost ip6-localhost ip6-loopback
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
EOF


# Generate /etc/network/interfaces
# interfaces.template
# {IP} {NETMASK} {NETWORK} {BROADCAST} {GATEWAY} {NAMESERVERS} {DOMAIN}
echo "Generating /etc/network/interfaces"
sudo cat << EOF > /etc/network/interfaces
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet dhcp
EOF


echo "Generating ~/.bash_login"
cat << EOF > ~/.bash_login
echo
echo "Updating deployment scripts ..."
echo
# find all .git directories and exec "git pull" on the parent.
find $root -type d -name .git -exec sh -c "cd \"{}\"/../ && pwd && git pull" \;
echo
echo "Running deployment scripts ..."
sudo $root/deploy.sh
EOF


echo
echo "System reset for deployment. Please poweroff."
echo