github_ssh.md

March 20, 2019 ยท View on GitHub

Some common problems of ssh keys in GitHub Back

1. Checking for existing SSH keys

Mac Windows Linux
  1. Open Terminal.
  2. Enter ls -al ~/.ssh to see if existing SSH keys are present.
  3. Check the directory listing to see if you already have a public SSH key.
  4. If not, generate a new one.
  1. Open Git Bash.
  2. Enter ls -al ~/.ssh to see if existing SSH keys are present.
  3. Check the directory listing to see if you already have a public SSH key.
  4. If not, generate a new one.
  1. Open Terminal.
  2. Enter ls -al ~/.ssh to see if existing SSH keys are present.
  3. Check the directory listing to see if you already have a public SSH key.
  4. If not, generate a new one.

2. Generating a new key

Mac Windows Linux
  1. Open Terminal.
  2. Paste the text below, substituting in your GitHub email address.
    $ ssh-keygen -t rsa -b 4096 -C "your_email@example.com"
  3. When you're prompted to "Enter a file in which to save the key," press Enter. This accepts the default file location.
  4. At the prompt, type a secure passphrase.
  1. Open Git Bash.
  2. Paste the text below, substituting in your GitHub email address.
    $ ssh-keygen -t rsa -b 4096 -C "your_email@example.com"
  3. When you're prompted to "Enter a file in which to save the key," press Enter. This accepts the default file location.
  4. At the prompt, type a secure passphrase.
  1. Open Terminal.
  2. Paste the text below, substituting in your GitHub email address.
    $ ssh-keygen -t rsa -b 4096 -C "your_email@example.com"
  3. When you're prompted to "Enter a file in which to save the key," press Enter. This accepts the default file location.
  4. At the prompt, type a secure passphrase.

3. Adding SSH keys to the ssh-agent

Mac Windows Linux
  1. Ensure ssh-agent is enabled:
    $ eval "$(ssh-agent -s)"
  2. Add your SSH key to the ssh-agent.
    $ ssh-add ~/.ssh/id_rsa
  1. Ensure ssh-agent is enabled:
    • If you are using Git Bash, turn on ssh-agent:
      $ eval "$(ssh-agent -s)"
    • If you are using another terminal prompt, such as Git for Windows, turn on ssh-agent:
      $ eval $(ssh-agent -s)
  2. Add your SSH key to the ssh-agent.
    $ ssh-add ~/.ssh/id_rsa
  1. Ensure ssh-agent is enabled:
    $ eval "$(ssh-agent -s)"
  2. Add your SSH key to the ssh-agent.
    $ ssh-add ~/.ssh/id_rsa

4. Testing SSH connection

Mac Windows Linux
  1. Open Terminal.
  2. Enter the following:

    3. ssh -T git@github.com
  3. Verify that the resulting message contains your username. If you see a message that contains "access denied," see "Error: Permission denied (publickey)".
  1. Open Git Bash.
  2. Enter the following:

    3. ssh -T git@github.com
  3. Verify that the resulting message contains your username. If you see a message that contains "access denied," see "Error: Permission denied (publickey)".
  1. Open Terminal.
  2. Enter the following:

    3. ssh -T git@github.com
  3. Verify that the resulting message contains your username. If you see a message that contains "access denied," see "Error: Permission denied (publickey)".