General use
Genrate SSH keypair:ssh-keygen -t ed25519
Remove host from ~/.ssh/known_hosts:ssh-keygen -R <host>
Copy local ssh-key to another server:ssh-copy-id <host>
Connect to a server over a jump host – hopping:ssh -t user@jumphost ssh user@target
update: since OpenSSH 7.3 it is possible to shorten this a bit more:ssh -J user@jumphost user@target
SSHÂ tunneling
Connect to port 80 on a remote server and build a tunnel to port 8000 on localhost:ssh -L 8000:localhost:80 server -N
sshfs – mount Remote File Systems
this command mounts a directory from a remote machine into a local directory:sshfs user@host:/path/on/host /local/path</pre>
X11-Forwarding
must to be enabled in ssh_config and sshd_config:ssh -X user@server <programm> &
Install packages used by remote machine
ssh remotehost 'dpkg --get-selections' | dpkg --set-selections && dselect install-N = Do not execute a remote command
-t = Force pseudo-terminal allocation
-V = Display the version number
-J = This is a shortcut to specify a ProxyJump