ssh

Remote access and secure shell

ssh

Tested ssh examples: key-based auth, the config file, host key verification, port forwarding, multiplexing, and reading a failed connection.
Copy files between two machines over SSH

Transfer a file or directory tree between two machines with scp or rsync, and resume an interrupted transfer without starting over.
Keep a program running after you log out

How to stop a long job dying when an ssh session ends, what each approach really does about SIGHUP, and an honest recommendation between them.