Table of Content

Given Problem

Currently, we have multiple accounts on the same host - It’s difficult to work on lots of projects at the same time. Because it can cause the issue of using the personal mail for our work projects. It will violate the security of our companies.

How do we solve this issue?

Some steps to use multiple Github accounts on the same machine

  1. Create a new SSH key for each account on terminal

    On Git Bash terminal, typing the following command:

     ssh-keygen -t rsa -C "your_mail_address"
    • -t stands for “type” and rsa is type of encryption.
    • -C stands for “comment”.

    Then, it will show like the below comment:

     Generating public/private rsa key pair.
     Enter file in which to save the key (/c/Users/your_username/.ssh/id_rsa):

    We can type the name for this key as “id_rsa_name_company_github”.

    Then, we’re defining the name_company as personal name.

    We can find these files in C:\Users\ducma\.ssh\id_rsa_personal_github.

    In this step, we don’t need to fill some words for passphrase.

  2. Check these key files in .ssh folder.

     ls -al ~/.ssh

    Then, we have:

  3. Create the config file in .ssh directory.

    The content of this config file will follow the below rules:

     # Personal github
     Host personal
     User git
     IdentityFile ~/.ssh/id_rsa_personal_github
     # Work github
     Host name_company
     User git
     IdentityFile ~/.ssh/id_rsa_name_company_github
  4. Add public key file’s content to Github.

    • Navigate to your Github account --> Settings --> SSH and GPG Keys.

    • In this step, click New SSH key button to create a new ssh public key on Github.

    • Then, we copy the public key file’s content to Github.

    • After that, it will look like the above image.

  5. Test your connection with Github.

     ssh -T git@personal
     ssh -T git@name_company

    Then, we can have:

  6. Setup configuration for our projects.

    • If our project’s Git is existing with HTTPS mode, we should change it to using SSH mode.

        # configure our name and email
        git config "our-name"
        git config "our-email"
        # configure Git's url
        git remote set-url origin git@`Host`:someone/name-project.git

      For example, below is the configuration file in doc-projects.

      Actually, we don’t need to configure sshCommand field to the command of ssh.

    • If we didn’t clone a project some time, we will follow the below commands:

        # Personal Project
        $ git clone git@personal:someone/project.git
        $ cd /path/to/project
        $ git config ""
        $ git config  "name"
        # Work Project
        $ git clone git@name_company:someone/project.git
        $ cd /path/to/project
        $ git config ""
        $ git config  "work name"
    • If we want to push a new projects to Github.

        git init
        git add .
        git commit -m "First commit"
        git remote add origin git@personal:someone/project.git
        git push origin master
  7. To check our steps above is successful or not.

    Run the below command.

     git pull

    Then, we have:

Wrapping up

That’s it for the guide that configures multiple Github accounts on one machine.

Thanks for reading. Have a great day.