clean install of scientific linux 6

clean_install_SL6

#Clean minimal install of Scientific Linux 6/Centos 6
#Additional Security Removed (iptables, selinux) 
  
#For additional hardening Information: 
#http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Security_Guide/index.html 
  
# initial installation 
#use SL Install DVD (minimal install only exists on DVD) 
#boot 
#[tab] for Kernel Parameters (linux text asknetwork ) 
#Select "minimal install" 
#Log into system 
  
# update system 
yum update -y 
  
# disable ip6 
echo "" >> /etc/sysctl.conf 
echo "# Disable IPV6" >> /etc/sysctl.conf 
echo "net.ipv6.conf.all.disable_ipv6 = 1" >> /etc/sysctl.conf 
echo "net.ipv6.conf.default.disable_ipv6 = 1" >> /etc/sysctl.conf 

# disable iptables
chkconfig ip6tables off 
chkconfig  iptables off 
  
# disable selinux 
sed -i 's/\=enforcing/\=disabled/g' /etc/selinux/config 
  
# install epel repo 
yum install -y epel-release
  
# change annoying blue directory color to something readable 
sed -i 's/DIR\ 01\;34/DIR\ 40\;33/g' /etc/DIR_COLORS 
  
# add time and date to history for security 
echo "export HISTTIMEFORMAT=\"[%h/%d .. %H:%M:%S] - \"" >> /etc/bashrc 
  
# add colorized grep results for easy reading 
echo "export GREP_OPTIONS='--color=auto'" >> /etc/bashrc 
echo "export GREP_COLOR='1;32'" >> /etc/bashrc