Using multiple github accounts with ssh keys

Generate ssh key pairs for accounts and add them to GitHub accounts.

Edit/Create ssh config file (~/.ssh/config):

# Default github account: user01
Host github.com
   HostName github.com
   IdentityFile ~/.ssh/key_for_user01
   IdentitiesOnly yes
   
# Other github account: work-user01
Host github-workuser01
   HostName github.com
   IdentityFile ~/.ssh/key_for_workuser01
   IdentitiesOnly yes

Test your connection

ssh -T [email protected]
ssh -T git@github-workuser01

With each command, you may see this kind of warning, type yes:

The authenticity of host 'github.com (192.30.252.1)' can't be established.
RSA key fingerprint is xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:
Are you sure you want to continue connecting (yes/no)?

If everything is OK, you will see these messages:

Hi user01! You've successfully authenticated, but GitHub does not provide shell access.

Hi workuser01! You've successfully authenticated, but GitHub does not provide shell access.

you can delete all cached keys if you are having issues

ssh-add -D

Now all are set, just clone your repositories

git clone git@github-workuser01:org2/project2.git /path/to/project2
cd /path/to/project2

While cloning the repo remember to replace the host in the clone url for this case github.com -> github-workuser01

For already cloned repo you can do this

git remote set-url origin git@github-workuser01:org2/project2.git

To do this automatically append this in your git config in ~/.gitconfig or ~/.config/git/config

[url "git@github-workuser01:work-user01"]
    insteadOf = [email protected]:work-user01
[url "git@github-workuser01:org2"]
    insteadOf = [email protected]:org2

To set git email based on folder name read this

Done! Goodluck!

sainak/using-multiple-github-accounts-with-ssh-keys.md

Using multiple github accounts with ssh keys