1. Open terminal.
2. Enter the command below, replacing with your email:

```sh
$ ssh-keygen -t rsa -b 4096 -C "johndoe@example.com" -f <path to key>
```

The path to key should be in ~/.ssh directory, with a self-explanatory filename and no spaces.

3. Type a password...
  - Having a password is recommended if you're using the key to log into a server;
  - Don't use a password if the key is for automatic server deploys or other automated tasks;

4. Save the key by pressing enter.
5. Add ssh key to agent:

```sh
$ ssh-add <path to key>
```

6. Enter password if you used one.