1. Generating a new SSH key pair

ssh-keygen -t ed25519 -C "email@example.com"

or

ssh-keygen -t rsa -b 4096 -C "email@example.com"

2. Adding an SSH key to your GitLab account

xclip -sel clip < ~/.ssh/id_ed25519.pub

3. Testing that everything is set up correctly

ssh -T git@gitlab.com(gitlab项目地址)