SofijaErkin/switch_git_account_email_address.md

Manually Switch Git-Account Email Address

I want to switch my Git Account Email address from one to another. Or, I need

to push my Git repository using my sync-Email. Also, I have to use my corporate

laptop to push my workspace but not using my predecessors' Git Email address.

1. Generate SSH Key Pair

First, my new Email need a customization SSH key pair.

Open and enter my Terminal, and print that codes. I've just used iTerm2 as my

laptop default terminal.

ssh-keygen -t rsa -b 4096 -C "[email protected]"

The terminal prompt:

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

Just input that below code to named my RSA as "my_new_email_address_id_rsa"

and store that RSA under "/Users/user_name/.ssh/my_new_email_address_id_rsa".

/Users/user_name/.ssh/my_new_email_address_id_rsa

And that terminal prompt:

Enter passphrase (empty for no passphrase):

I just input "enter" key.

Also, that terminal prompt:

Enter same passphrase again:

I also just input "enter" key.

Then, the terminal prompt:

Your identification has been saved in /Users/user_name/.ssh/my_new_email_address_id_rsa

Your public key has been saved in /Users/user_name/.ssh/my_new_email_address_id_rsa.pub

The key fingerprint is:

...

2. Add SSH Key Pair

2.1 Start SSH-Agent in the Background

Just use this code:

eval "$(ssh-agent -s)"

That terminal prompt:

> Agent pid 59566

2.2 Configure SSH config file

Create or edit a config configuration file under the /.ssh directory:

cd /Users/user_name/.ssh && vim config

Notice:

Please pay attention to the common commands of vim or bash:

Press the letter key "i" to edit mode;

Press the return key "esc" + input the letter ":wq": save and exit;

Edit and adding :

Host my_new_email_address-github.com

    Hostname github.com

    User git

    AddKeysToAgent yes

    UseKeychain yes

    IdentityFile /Users/user_name/.ssh/my_new_email_address_id_rsa

2.3 Add to SSH-Agent

Just use that below code:

ssh-add -K /Users/user_name/.ssh/my_new_email_address_id_rsa

Notice: using the below on Linux:

/usr/bin/ssh-add -k /home/user_name/.ssh/my_new_email_address_id_rsa

Check the proxy of the ssh key again:

ssh-add -l

That terminal prompt:

4096 SHA256:............/Users/user_name/.ssh/my_new_email_address_id_rsa (RSA)

2.4 Adding Public RSA to Git Platform SSH keys

Just use that code to catch the public RSA key:

cat /Users/user_name/.ssh/my_new_email_address_id_rsa.pub

Copy the print to GitHub ssh key location.

Check the proxy of the ssh key again:

ssh-add -l

That terminal prompt:

4096 SHA256:............ /Users/user_name/.ssh/sofija_personal_github_id_rsa (RSA)

2.5 Local Git Do Connect With GitHub via SSH

Just use this command:

ssh -T git@my_new_email_address-github.com

That terminal prompt:

Hi my_github_user_name! You've successfully authenticated, but GitHub does not provide shell access.

If that is GitLab, prompt:

Welcome to GitLab, @my_gitlab_user_name!

If that is Bitbucket, prompt:

authenticated via ssh key.

You can use git to connect to Bitbucket. Shell access is disabled

3. Change Local Git Config

Just enter your local repository, change git "user.name", "user.email" and

"remote-url" to mine, use this command:

git config --list && git config user.name "MY_NEW_EMAIL_ADDRESS_GIT_NAME" && git config user.email "[email protected]" && git remote set-url origin git@my_new_email_address-github.com:my_github_user_name/my_remote_repository_name.git && git config --list

Then create a new Markdown "README.md" to test my changed Email address, just

use this command:

echo "This is a test for \"my new Email address git\"." >> README.md && git add README.md && git commit -m "Create README.md to test new Email git" && git pull && git push

Then, just log into my Git account to checkout my repository's' "README.md".

4.Change Remote Git User Name

It's best to change my remote GitHub/GitLab/Bitbucket etc user name. After

changing my remote GitHub account user name "my_github_user_name" to

"MyNewEmailNewGitName", and I also need to change my remote URL in local

repository, just use this command:

git config --list && git remote set-url origin git@my_new_email_address-github.com:MyNewEmailNewGitName/my_remote_repository_name.git && git config --list

Also, use "README.md" to checkout renamed Github user name

"MyNewEmailNewGitName". Just use this command:

echo "This is a test for \"my new Git user name\"." >> README.md && git add README.md && git commit -m "Update README.md to test new Git user name" && git pull && git push

Then, just log into my Git account to checkout my repository's' "README.md".

That "README.md" in my repository just like:

This is a test for "my new Email address git".

This is a test for "my new Git user name".

Now, I've finished all.