A simple way to authenticate to github using ssh across multiple accounts

git-ssh.txt

1. Generate keys for github accounts

eg.

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

ssh-keygen -t ed25519 -C "your_email2@website2.com"

2. Start ssh-agent in background and add keys

eval "$(ssh-agent -s)"

ssh-add ~/.ssh/path_to_key1

ssh-add ~/.ssh/path_to_key2

3. Add ssh key to github, by pasting the *public* key to the browser

4. Modify ssh config file: .ssh/config

Host github.com
    User git
    Hostname github.com
    PreferredAuthentications publickey
    IdentityFile ~/.ssh/INSERT_PRIVATE_KEY1

Host github-INSERT_NAME.com
    User git
    Hostname github.com
    PreferredAuthentications publickey
    IdentitiesOnly yes
    IdentityFile ~/.ssh/INSERT_PRIVATE_KEY2
    
git clone git@github.com:username/repo.git

git clone git@github-INSERT_NAME.com:username/repo.git