Instal oh-my-zsh with curl
sh -c "$(curl -fsSL https://raw.githubusercontent.com/robbyrussell/oh-my-zsh/master/tools/install.sh)"
sudo apt-get update
sudo apt-get upgrade
sudo rm -rf opt
cd /var/log/
sudo rm `find . -type f`
sudo swapoff --all
sudo update-rc.d -f dphys-swapfile remove
sudo apt-get remove dphys-swapfile
sudo rm /etc/init.d/dphys-swapfile