- Intall SSH Server:
$ sudo apt install openssh-server
- Change SSH Port, if needed:
$ cd /etc/ssh/
$ sudo nano sshd_config
The change port number, save and exit.
- Restart SSH service:
$ sudo systemctl restart ssh
- Open SSH session to control another machine:
$ ssh hostname@host_ip_address -p ssh_port
- Temporary let ssh session (that is controlling a remote host) run under background (i.e. a special command to suspend the SSH client):
Press “–” (Shift -), “Enter", then “~", followed by “Ctrl-Z"
- Re-enter interactive mode after Ctrl-Z (i.e. back to the process that is let running in background after press Ctrl-Z):
Type “fg” and hit “enter” in terminal.