curl https://apt.matrix.one/doc/apt-key.gpg | sudo apt-key add -
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 252 100 252 0 0 2739 0 --:--:-- --:--:-- --:--:-- 2739
gpg: no valid OpenPGP data found.
curl https://apt.matrix.one/doc/apt-key.gpg | sudo apt-key add - % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100 252 100 252 0 0 2739 0 --:--:-- --:--:-- --:--:-- 2739 gpg: no valid OpenPGP data found.