ma300k Debian packages To use this repository perform the following steps as root: $ apt install lsb-release wget apt-transport-https $ wget -O /usr/share/keyrings/ma300k-keyring.gpg https://deb.ma300k.de/gpg.key $ echo "deb [signed-by=/usr/share/keyrings/ma300k-keyring.gpg] https://deb.ma300k.de/ $(lsb_release -cs) main" > /etc/apt/sources.list.d/ma300k.list $ apt update Then you can install packages. For example: $ apt install evr