Readme here: https://github.com/gitshawn/howto_articles/blob/main/Install%20oh-my-zsh%20in%20AWS%20CloudShell.md
# Download oh-my-zsh
sh -c "$(curl -fsSL https://raw.github.com/ohmyzsh/ohmyzsh/master/tools/install.sh)"
# Set zsh to auto-start
echo 'exec /bin/zsh' >> ~/.bash_profile
# Add aws cli to zsh plugins (for tab completion)