~/.ssh/config Configuration ssh file github (OpenSSH)

config

# If you don't already have an SSH key: 
# ssh-keygen -t ed25519 -C "example@email.com"
# Generating public/private ed25519 key pair.
# Enter file in which to save the key (/home/user/.ssh/id_ed25519): /home/user/.ssh/[save-name]
# ......

# Then copy pub to github config page:
# cat /home/user/.ssh/[save-name].pub | xclip -i

# In /home/user/.ssh/config put:

Host github.com
  User git
  Hostname github.com
  PreferredAuthentications publickey
  RequestTTY no                              # (-T option)
  IdentityFile /home/user/.ssh/[save-name]