You’ll first need to download a terminal application. A widely recommended one which will run from a single executable file without the need for system administration rights to install programs is called putty and can be downloaded from:
Having downloaded an run putty, just enter
ravenlogin.arcca.cf.ac.uk into the Host Name box and then click ‘Open’:
Putty will then start a terminal session into which you can enter your Raven username and password.
Getting connected to Raven is easier on a Mac as an ssh application called terminal is already installed. Run this from your Applications/Utilities folder.
Then run the command