where "mybox.somebusiness.com" would be the URL of the computer you want to connect to, and "jjones" would be your username on that machine. Before you are connected, the password needs to be entered for that username.
If your username on the local machine in this same as on the remote machine you can use the command:
You can directly issue a command on the remote machine as follows:
which will execute the ps command and show a list of processes running.
ssh email@example.com ps
See the ssh man page for complete documentation.
See also rlogin.