sudo apt-get install zsh
zsh --version
sh -c "$(curl -fsSL https://raw.githubusercontent.com/robbyrussell/oh-my-zsh/master/tools/install.sh)"
vi ~/.zshrc or gedit ~/.zshrc
ZSH_THEME="agnoster"
https://gist.github.com/abdallahokasha/2c31f5f0779cfa5faebfa59a27c44774