Sothea Nim

Let say you have 2 (or more) github accounts: ghaccusr1 and ghaccusr2. You want to use both of them on the same client (computer). What you need are:

• Multiple SSH keys (id_rsa_*) and add the SSH key to the appropriate account on Github.
• Add and configure your ~/.ssh/config.
• Sync remote repo to your local project folder.

Step 1: Generate SSH keys and add the generated keys to the Github accounts.

1. Generate SSH key for: ghaccusr1
   • $ touch ~/.ssh/id_rsa_ghaccusr1
   • $ touch ~/.ssh/id_rsa_ghaccusr1.pub
   • $ ssh-keygen -t rsa -C "your-email-address-for-ghaccusr1"
   • Enter a file in which to save the key (/Users/{you}/.ssh/id_rsa): id_rsa_ghaccusr1
   • Enter passphrase (empty for no passphrase): [Type a passphrase]
   • Enter same passphrase again: [Type passphrase again]
   • $ eval "$(ssh-agent -s)"
   • $ ssh-add ~/.ssh/id_rsa_ghaccusr1
   • $ pbcopy < ~/.ssh/id_rsa_ghaccusr1.pub
   • Go to github.com > login to: ghaccusr1 > Settings > SSH Keys > New SSH bey
   • Type in any name in the "Title" text field.
   • Press "Ctrl + V" or "Command + V" in the "Key" text field.
   • Click "Add SSH key"
2. Generate SSH key for: ghaccusr2
   • $ touch ~/.ssh/id_rsa_ghaccusr2
   • $ touch ~/.ssh/id_rsa_ghaccusr2.pub
   • $ ssh-keygen -t rsa -C "your-email-address-for-ghaccusr2"
   • Enter a file in which to save the key (/Users/{you}/.ssh/id_rsa): id_rsa_ghaccusr2
   • Enter passphrase (empty for no passphrase): [Type a passphrase]
   • Enter same passphrase again: [Type passphrase again]
   • $ eval "$(ssh-agent -s)"
   • $ ssh-add ~/.ssh/id_rsa_ghaccusr2
   • $ pbcopy < ~/.ssh/id_rsa_ghaccusr2.pub
   • Go to github.com > login to: ghaccusr1 > Settings > SSH Keys > New SSH bey
   • Type in any name in the "Title" text field.
   • Press "Ctrl + V" or "Command + V" in the "Key" text field.
   • Click "Add SSH key"

Step 2: Create / edit ~/.ssh/config file.

1. If the config file doesn't exist yet: $ touch ~/.ssh/config. Otherwise, proceed to 2.
2. vim ~/.ssh/config
3. #ghaccusr1 GitHub
Host github-ghaccusr1
HostName github.com
User git
IdentityFile ~/.ssh/id_rsa_ghaccusr1

#ghaccusr2 Github
Host github-ghaccusr2
HostName github.com
User git
IdentityFile ~/.ssh/id_rsa_ghaccusr2

4. Press "Esc" key.
5. Type in: ":wq!"

Step 3: Test connecting to your Github repo.

1. Test for "ghaccusr1"
   • cd /to/the/path/of/your/project/folder
   • git init
   • git remote add origin git@github-ghaccusr1:ghaccusr1/[repo-name].git (assuming you already create a repo on Github)
   • git pull origin master, or
   • git add *
   • git commit -m "Some message -- could be my initial commit"
   • git push origin master
2. Test for "ghaccusr2"
   • cd /to/the/path/of/your/project/folder
   • git init
   • git remote add origin git@github-ghaccusr2:ghaccusr1/[repo-name].git (assuming you already create a repo on Github)
   • git pull origin master, or
   • git add *
   • git commit -m "Some message -- could be my initial commit"
   • git push origin master

That is it!