[ssh config] ssh config #ssh #config

ssh_config_key.sh

To configure your .ssh/config file to use two different GitHub accounts with separate SSH keys, follow these steps based on best practices:
Generate distinct SSH key pairs for each GitHub account, if you haven't already, for example:
ssh-keygen -t rsa -C "[email protected]" -f ~/.ssh/id_rsa_account1
ssh-keygen -t rsa -C "[email protected]" -f ~/.ssh/id_rsa_account2

Add the SSH keys to the ssh-agent:
ssh-add ~/.ssh/id_rsa_account1
ssh-add ~/.ssh/id_rsa_account2

Configure your ~/.ssh/config file with Host aliases pointing to GitHub but specifying different IdentityFiles:
# Default GitHub account (account1)
Host github.com
    HostName github.com
    User git
    IdentityFile ~/.ssh/id_rsa_account1
    IdentitiesOnly yes

# Second GitHub account (account2) with alias
Host github-account2
    HostName github.com
    User git
    IdentityFile ~/.ssh/id_rsa_account2
    IdentitiesOnly yes

Usage: When cloning or working with repositories under the second GitHub account, use the host alias from the config:
git clone git@github-account2:username/repo.git

For your primary account, you can continue to use:
git clone [email protected]:username/repo.git