3.1. Atom text editor

Install Atom:

1wget -qO - https://packagecloud.io/AtomEditor/atom/gpgkey | sudo apt-key add -
2echo "deb [arch=amd64] https://packagecloud.io/AtomEditor/atom/any/ any main" | sudo tee /etc/apt/sources.list.d/atom.list
3sudo apt update
4sudo apt install -y atom