Break out of a frozen ssh session

Press <Enter> ~ .

If it doesn't work, try again with an <Escape> in front).

Set up a public/private key pair so you can log in without a password

If you don't already have ~/.ssh/id_rsa you can generate one:

ssh-keygen -t rsa -f ~/.ssh/id_rsa

It's up to you whether you want to use a passphrase.

Now we need to tell the remote machine to trust you. We will give it your public key. Then anyone with your private key will be able to log in.

Display your public key:
```
cat ~/.ssh/id_rsa.pub
```
You may copy this into your clipboard.
Open a shell in the remote machine (if you don't already have one):
```
ssh <user>@<remote_host>
```

Add your public key to the file ~/.ssh/authorized_keys:

mkdir -p ~/.ssh
echo "<paste_public_key>" >> ~/.ssh/authorized_keys

That's it. Now the next time you try to ssh <user>@<remote_host> it should use your key, so you won't need the user's password.

If you use a different filename, e.g. ~/.ssh/my_other_identity_rsa.pub then you must specify this when logging in:

ssh -i ~/.ssh/my_other_identity_rsa <user>@<remote_host>