How to generate a SSH key

Generate your SSH key on Linux and use it with Gitlab

Open a shell and enter:

~ ➜ ssh-keygen 
Generating public/private rsa key pair.
Enter file in which to save the key (/home/rphlm/.ssh/id_rsa): 
Enter passphrase (empty for no passphrase): 
Enter same passphrase again:

• Accept the suggested filename and directory, unless you a want to save in a specific directory where you store other keys. You can also dedicate the SSH key pair to a specific host
• Enter your passphrase
• A confirmation is displayed, including information about where your files are stored:

Your identification has been saved in /home/user/.ssh/id_rsa
Your public key has been saved in /home/user/.ssh/id_rsa.pub
The key fingerprint is:
SHA256:W3ma2+rUPWbomNGuRhuS2o8rpNCGH5WW2/rJYF2lb5g user@arch
The key’s randomart image is: 
+ — -[RSA 3072] — — +
|                   |
|                   |
| o .               |
| = +               |
| o o oS.= .        |
| o + o.++oX o      |
| + +o+ooEo* =      |
| o.+o.+oX o .      |
| o*=Oo+            |
+ — — [SHA256] — — -+

• Go to Gitlab “User Settings > SSH Key” and copy your id_rsa.pub

• Next time you clone a repo, you’re asked for your main passphrase.
• Save it to your keychain so it is unlocked with your session.

That’s all!