How to switch between GitHub accounts using SSH to access the repositories

1. Set Up SSH Keys for Each Account

If you haven't already, generate separate SSH keys for each GitHub account:

# For personal account
ssh-keygen -t rsa -b 4096 -C "your_personal_email@example.com"
# Save it as ~/.ssh/id_rsa_personal

# For work account
ssh-keygen -t rsa -b 4096 -C "your_work_email@example.com"
# Save it as ~/.ssh/id_rsa_work

Add each key to the SSH agent:

# Load personal key
ssh-add ~/.ssh/id_rsa_personal

# Load work key
ssh-add ~/.ssh/id_rsa_work

2. Configure SSH Config File

Set up an SSH config file to specify which key to use for each account. Edit (or create)

~/.ssh/config

# Personal account
Host github-personal
  HostName github.com
  User git
  IdentityFile ~/.ssh/id_rsa_personal

# Work account
Host github-work
  HostName github.com
  User git
  IdentityFile ~/.ssh/id_rsa_work

3. Clone Repositories Using the Correct Host

When you clone a repository, use the Host alias specified in your SSH config (github-personal or github-work):

# For personal account
git clone git@github-personal:username/repo.git

# For work account
git clone git@github-work:username/repo.git

4. Switching Accounts for Existing Repositories

For an existing repository, update the remote URL to use the appropriate SSH alias:

git remote set-url origin git@github-personal:username/repo.git