I’m trying to install the Elmer csc software, and I pasted the command line exactly as it is from their site:
sudo apt-add-repository ppa:elmer-csc-ubuntu/elmer-csc-ppa
I get the following:
Archive for the monolithic Elmer FEM software ubuntu packages.
More info: https://launchpad.net/~elmer-csc-ubuntu/+archive/ubuntu/elmer-csc-ppa
Press [ENTER] to continue or Ctrl-c to cancel adding it.
Error: retrieving gpg key timed out.
I pressed Enter every time.
Can somebody hep me please?