To install packages from this repository, first ensure that you have curl and the matching keyring installed for apt-key. On Debian: sudo apt install curl debian-keyring The you can proceed to set this repo up: 1. add the archive key: curl -sS https://deb.troglobit.com/pubkey.gpg | sudo apt-key add - or, if you're behind some corporate snooper (like I am): wget -q -O - https://deb.troglobit.com/pubkey.gpg | sudo apt-key add - 2. add the repository to your sources.list: echo "deb [arch=amd64] https://deb.troglobit.com/debian stable main" \ | sudo tee /etc/apt/sources.list.d/troglobit.list 3. update the package cache sudo apt-get update To install some packages: sudo apt-get install inadyn mg2a uftpd