I read recently Etherpad is more difficult than other collaborative editors to install. Before today it took a whole 2 lines.. Today it’s one line for Debby/Ubuntu/Linux Mint heros..
Copy / Paste below to your CLI to install Etherpad:
wget etherpad.org/downloads/etherpad-1.3.deb -O etherpad-1.3.deb && sudo dpkg -i etherpad-1.3.deb
Hopefully we will have an apt package / ppa repo sorted soon but for now this should suffice :)
If this doesn’t work for you please let us know.