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setting up ssh keys for github and bitbucket

Generating a new SSH key for GitHub

Basic ssh key adding

Generating a new SSH key for GitHub.

ssh-keygen -t ed25519 -C "<insert email>" -f ~/.ssh/github
ssh-add -K ~/.ssh/github

Paste the following into GitHub:

pbcopy < ~/.ssh/github.pub

Add the SSH key locally.

ssh -T git@bitbucket.org-clientname

If you use a new host or something like `bitbucket.org-clientname` as `host`, you need to add it to your ssh.

ssh -T git@bitbucket.org-clientname

Config file

If there is no config file yet:

touch ~/.ssh/config

Once there is a config file, you can add configurations with the following:

printf "# Github\n Host github.com\n Hostname github.com\n AddKeysToAgent yes\n UseKeychain yes\n IdentityFile ~/.ssh/github" | tee ~/.ssh/config

Multiple accounts by the same host

Sometimes you have different accounts (work, private, client 1, client 2, ...), and you want to ensure you commit with the proper credentials.

You can do that, but it requires a bit of work. It works the same way you add a regular ssh-key, but there are some differences.

ssh-keygen -t ed25519 -C "<insert email>" -f ~/.ssh/bitbucket-private
ssh-add -K ~/.ssh/bitbucket-private

Paste the following into your host (Bitbucket in this example):

pbcopy < ~/.ssh/bitbucket-private.pub

Now is where it gets different. You create an alias. We can add anything we want behind the hostname. In this example, we add "-private", but it might as well be "-client-x".

ssh -T git@bitbucket.org-private

In the config, we resolve the hostname.

printf "# Bitbucket private\n Host bitbucket.org-private\n Hostname bitbucket.org\n AddKeysToAgent yes\n UseKeychain yes\n IdentityFile ~/.ssh/bitbucket-private" | tee ~/.ssh/config