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SSH is the Secure SHell, and it is widely used to remotely control computers from the command line. Here's a typical example of a connection to a remote computer via SSH:

ssh user@


VirtualBox users will have to use the port forwarding trick, and connect with a command similar to this:

ssh user@ -p 2222

See this link to find out how to enable and use port forwarding in VirtualBox.

Here's an introductory video on SSH. Enjoy!

Some commands on Linux:

  • Check if an openssh server is running:

systemctl status sshd

  • Install openssh server (on Debian):

apt install openssh-server

  • Install openssh client (on Debian):

apt install openssh-client