ssh.md

SSH

Setting up ssh allows you to connect remotely to a machine to perform runs or tasks that your machine might not be prepared for.

You can SSH into computers you have set up with this command:

ssh <username>@<ip address>

Then it will prompt you for the password as if you were logging in to the machine you're SSHing into.

To close out of an ssh session type: ~.

You can check who is connected to a machine by running:

who -u

Installing SSH

On the new device, run:

1. sudo apt install net-tools
2. ifconfig and remember the inet 12-digit address
3. sudo apt-get update
4. sudo apt-get install openssh-server
5. sudo ufw allow 22

Now you'll be able to connect from any machine so long as you remember the username, password, and ip address.

Creating a Shortcut

If the task of remembering the ip address is annoying to you, you can create a shortcut on your machine. Access the ~/.ssh/config file so that you can save shortcuts to computers and clusters in the form:

Host <shortcut>
  Hostname <Address>
  User <username>

Now you'll be able to connect with the following command and your password:

ssh <shortcut>

SCP

So you want to send something from your computer to your remote, try scp

scp <filename.extension> <user>@<ssh host name>:/path/to/where/you/want/file.extension

Conversely, you can receive files with

scp <username>@<remote>:/file/to/send/file.extension /where/to/put/file.extension