Troubleshooting Guide - hoppsen/xcode-template GitHub Wiki

How to Fix Your Ruby Version

1. Open the Terminal

2. Install Homebrew (if not already installed)

   /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
   

3. Install rbenv (or any other ruby version manager)

4. Once rbenv is installed you can simply install another Ruby version by running this:

   rbenv install 2.7.4 && rbenv global 2.7.4
   

How to Setup SSH for GitHub

Note Check for any existing keys to reuse via ls -al ~/.ssh

1. Create a new SSH key

   ssh-keygen -t ecdsa -f ~/.ssh/${USER}-GitHub -C ${USER}@hoppsen.com
   

2. Add this key to the SSH agent

   ssh-add -K ~/.ssh/${USER}-GitHub
   

3. Add github.com to the known hosts

   ssh-keyscan -H github.com >> ~/.ssh/known_hosts
   

4. Add the following snippet to ~/.ssh/config

   Host *
       IdentitiesOnly yes
       ForwardAgent yes
       UseKeychain yes
       AddKeysToAgent yes
       IdentityFile ~/.ssh/marcel-GitHub
   

   Do not forget to change IdentityFile accordingly! Run echo $USER to find out your username.

5. Put your public key into the pasteboard

   pbcopy < ~/.ssh/${USER}-GitHub.pub
   

6. Go to https://github.com/settings/keys

7. Hit New SSH key

8. Press CMD + V to paste your public key

9. Test your SSH connection via

   ssh -T [email protected]
   

   You should see something similar to this:

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