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On this page
  • Installation
  • Adding an SSH key in your GitHub account
  • Check for existing SSH keys
  • Generate a new SSH key
  • Add your SSH key to the ssh-agent
  • Copy and add the public key to your GitHub account
  • Adding an SSH Key in your BitBucket account

Git

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Last updated 6 years ago

Installation

If you installed Xcode from the you should skip this task, otherwise run:

brew install git

When done, to test that it installed properly you can run:

git --version

And which git should output /usr/local/bin/git.

Next, we'll define your Git user (should be the same name and email you use for ):

git config --global user.name "Your Name Here"
git config --global user.email "your_email@youremail.com"

They will get added to your .gitconfig file.

To push code to your GitHub repositories, we're going to use the recommended HTTPS method (versus SSH). To prevent git from asking for your username and password every time you push a commit you can cache your credentials by running the following command, as described in the .

git config --global credential.helper osxkeychain

Adding an SSH key in your GitHub account

We suggest to use an SSH Key for each account.

Check for existing SSH keys

First, we need to check for existing SSH keys on your computer. We do this by running:

ls -al ~/.ssh
# Lists the files in your .ssh directory, if they exist

Check the directory listing to see if you have files named either id_rsa.pub or id_dsa.pub. If you already have this you need to use a different name for your new SSH Key.

Generate a new SSH key

ssh-keygen -t rsa 
# Generating public/private rsa key pair.
# Enter file in which to save the key
(/Users/tony/.ssh/id_rsa): /Users/tony/.ssh/daton89_github

To create a key with a name or path other than the default, specify the full path to the key. For example, to create a key called my-new-ssh-key, enter a path like the one shown at the prompt: (/Users/tony/.ssh/id_rsa): /Users/tony/.ssh/daton89_github

Change the default location and name and press enter.

Enter and re-enter a passphrase when prompted. The command creates your identity with its public and private keys.

Now list the contents of ~/.ssh to view the key files.

ls ~/.ssh
config id_rsa id_rsa.pub daton89_github daton89_github.pub

Add your SSH key to the ssh-agent

Run the following commands to make sure that the ssh-agentis running.

eval 'ssh-agent'

No matter what operating system version you run you need to run this command to complete this step:

ssh-add -K ~/.ssh/daton89_github
# Identity added: /Users/tony/.ssh/daton89_github (/Users/tony/.ssh/daton89_github)

To make sure that your key was added to the agent you can run:

ssh-add -l

Copy and add the public key to your GitHub account

The last step is to let GitHub know about your SSH key. Run this command to copy your key to your clipboard:

pbcopy < ~/.ssh/daton89_github.pub

Return to your terminal window and run the following command: 

ssh -T git@github.com
# Attempts to ssh to GitHub

You may see a warning like this:

The authenticity of host 'github.com (IP ADDRESS)' can't be established.RSA key fingerprint is 16:27:ac:a5:76:28:2d:36:63:1b:56:4d:eb:df:a6:48.Are you sure you want to continue connecting (yes/no)?

Verify that the fingerprint in the message you see matches, then type yes:

Hi daton89! You've successfully authenticated, but GitHub does not
provide shell access.

More Resources

Adding an SSH Key in your BitBucket account

You can generate and add your Key to ssh-agent with the same process used for GitHub. For add your public key to your account you need to follow these steps:

  1. From Bitbucket, choose Bitbucket settings from your avatar in the lower left. The Account settings page opens.

  2. Click SSH Keys.

  3. In your terminal copy the public key with this command: pbcopy < ~/.ssh/<your pub key name>.pub

  4. From BitBucket, click Add key.

  5. Enter a Label for the Key.

  6. Paste the copied public key into the SSH Key field.

  7. Click Save.

  8. Return to your terminal window and verify your configuration and username by entering the following command: ssh -T git@bitbucket.org

    1. The command message tells you which of your Bitbucket accounts can log in with that key.

More Resources

Then go to GitHub and . Paste your key in the "Key" text box and pick a name that represents the computer you're currently using.

Verify that the resulting message contains your username. If you receive a "permission denied" message, see .

If you get an error message with Permission denied (publickey), check the page for help.

Now that you've got an SSH key set up, use the SSH URL the next time you . If you already have a repository that you cloned over HTTPS, to use its SSH URL.

GitHub
instructions
input your new SSH key
"Error: Permission denied (publickey)"
Troubleshoot SSH issues
clone a repository
change the remote URL for your repository
LogoConnecting to GitHub with SSH - GitHub DocsGitHub Docs
Official GitHub documentation
LogoSet up an SSH key | Bitbucket Cloud | Atlassian SupportAtlassian Support