SSH set up

SSH.md

SSH Keys

Generating a new SSH key

1. Create a ssh key:

   ssh-keygen -t rsa -b 4096 -C "<email>"

2. Enter the name and the passphrase.

SSH Config

1. Creating a config file (~/.ssh/):

   touch config

2. Editing the config file:

   nano config

3. Adding into config file:

   # Personal account
   Host personal.github.com
   	HostName github.com
   	AddKeysToAgent yes
   	UseKeychain yes # KeyChain (for macOS)
   	PreferredAuthentications publickey
    	IdentityFile ~/.ssh/<personal_key>
   
   # Enterprise account
   Host enterprise.github.com
    	HostName github.com
    	AddKeysToAgent yes
    	UseKeychain yes # KeyChain (for macOS)
   	PreferredAuthentications publickey
   	IdentityFile ~/.ssh/<enterprise_key>

Adding your SSH key to the ssh-agent

1. Start the ssh-agent in the background:

   eval "$(ssh-agent -s)"

2. Add your SSH private key to the ssh-agent:

   ssh-add -K ~/.ssh/<ssh_filename>

   2. On macOS, ssh-agent will "forget" this key, once it gets restarted during reboots. But you can import your SSH keys into Keychain using this command:

      /usr/bin/ssh-add -K ~/.ssh/<ssh_filename>

Adding a new SSH key to your repository account

1. Copy the SSH key to your clipboard:

   pbcopy < ~/.ssh/<ssh_filename>.pub

Testing your SSH connections

ssh -T git@<config_host>.github.com