My debian server set-up script

debiansetup.sh

# Execute this script as root user #


#--- Check that system is up to date ---#
apt-get update
apt-get upgrade


#--- Install desired software ---#
apt-get install sudo
apt-get install fail2ban
wget http://www.inetbase.com/scripts/ddos/install.sh
chmod 0700 install.sh && ./install.sh && rm ./install.sh
apt-get install mysql-server
mysql_secure_installation
apt-get install nginx
apt-get install monit
apt-get install build-essential
# add necessary statements here #


#--- Create daemons with monitoring, logging and automated notifications ---#
# add necessary statements here #


#--- Add cron jobs ---#

#Write out current crontab
crontab -l > cron.temp

#Add desired cron jobs, unless they already exist
if grep -q 'apt-get update' cron.temp; then
  printf '\nA cron job for "apt-get update" already exists, please check manually\n\n'
else
  printf "\n\n0 22 * * 7 apt-get update; apt-get upgrade" >> cron.temp
fi

#Install new cron file and remove temp
crontab cron.temp
rm cron.temp