How to setup multiple git account in a single computer:

I want to use multiple GitLab (or GitHub, etc.) on my machine. One could be your personal account and another one you use specifically for my startup ideas. I want to use different SSH keys to access the repositories in either account.

Here’s how to achieve that setup properly. Let’s assume we have the two GitLab accounts:

• Profile 1: Personal Account, username: personal, email: personal@email.com
• Profile 2: Startup Account, username: startup, email: startup@email.com

Generate ssh keys for both profile:

ssh-keygen -t rsa -b 2048 -C "personal" - name the key: personal_key
ssh-keygen -t rsa -b 2048 -C "startup" - name the key: startup_key

Configure SSH to use the correct keys:

Now create the file ~/.ssh/config and add the following contents:

Host gitlab.com
    HostName gitlab.com
    User git
    IdentityFile ~/.ssh/personal_key
Host gitlab.com-startup
    HostName gitlab.com
    User git
    IdentityFile ~/.ssh/startup_key

• Add the public key to the account: tr -d '\n' < ~/.ssh/startup_key.pub | pbcopy
• Clone the repo using the: git clone git@gitlab.com-startup:<groupname>/<projectname>.git