Centos 6 installation script

echo 'Adding DNS servers'
echo 'DNS1=8.8.8.8' >> /etc/sysconfig/network-scripts/ifcfg-eth0
echo 'DNS2=8.8.4.4' >> /etc/sysconfig/network-scripts/ifcfg-eth0

echo 'updateing yum'
yum update -y

echo 'Installing Desktop (this can take a while)'
yum groupinstall Desktop -y

echo 'Installing xfce4 & firefox (this can take a while)'
yum install gnome-core xfce4 firefox -y

echo 'Installing tigervnc-server'
yum install tigervnc-server -y

echo 'Installing sys admin utils'
yum install curl -y
yum install wget -y

echo 'removeing old java'
yum remove java-1.6.0-openjdk -y
yum remove java-1.7.0-openjdk -y

echo 'Fixing hostname'
echo -e "127.0.0.1\t$( hostname | awk '{ print $1 }' )" >> /etc/hosts

echo 'install java8'
wget --no-check-certificate --no-cookies --header "Cookie: oraclelicense=accept-securebackup-cookie" http://download.oracle.com/otn-pub/java/jdk/8u45-b14/jdk-8u45-linux-x64.rpm
rpm -ivh jdk-8u45-linux-x64.rpm
export JAVA_HOME=/usr/java/jdk1.8.0_45/
export PATH=$PATH:$JAVA_HOME

echo 'Open firewall for VNC'
iptables -A INPUT -m state --state NEW -m tcp -p tcp -m multiport --dports 5901:5903,6001:6003 -j ACCEPT
service iptables save
service iptables restart

echo 'Install fail2ban for Centos 6'
rpm -Uvh http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
yum install fail2ban -y
cp /etc/fail2ban/jail.conf /etc/fail2ban/jail.local
service fail2ban restart

chkconfig vncserver on

echo 'please enter a vnc password'
vncpasswd

echo 'VNCSERVERS="1:root"' > /etc/sysconfig/vncservers
echo 'VNCSERVERARGS[1]="-geometry 1024x768"' >> /etc/sysconfig/vncservers

service vncserver restart
pkill vnc

sed -i "s/twm/#twm/" ~/.vnc/xstartup
echo 'exec gnome-session &' >> ~/.vnc/xstartup

service vncserver restart