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HomeDevelopment ToolsgitHow to delete email information in git

As a developer, using Git is inevitable. Git is a version control system that helps you track code changes and also allows you to roll back to earlier versions. In Git, each commit is associated with an author and an email address. Sometimes, we may need to delete some erroneous email messages. Next, we will introduce how to delete email information in Git.

Understand the configuration of Git

Before we start deleting email information, we first need to understand the configuration of Git. We can set the default username and email address in Git's global configuration. The following command will set the global username and email address.

$ git config --global user.name "Your Name"
$ git config --global user.email "your_email@example.com"

Please note that by entering the git config command in the terminal, we can list all options for the current Git configuration and view the values ​​of global and repository-specific settings.

Change email address during submission

If we do not configure the user information correctly when submitting the code, an incorrect email address may be used. In this case, we need to change the email address in the Git commit. You can use the following command:

$ git commit --amend --author="New Author Name <new_email_address>"</new_email_address>

This command will open the default text editor and let you change the author and email address of the commit. Note that if you use the -V option, the default text editor will not be opened.

Remove submitted email addresses

Sometimes we may need to completely remove an email address from the entire repository, perhaps because the address is no longer a valid address. Or because the address was leaked. In this case, we need to remove that email address in Git by following the steps below.

Step 1: Find all submission records that contain this email address

First, we need to find all submission records that contain this email address. We can use the following command to find commit records associated with this email address.

$ git log --author="email_address"

This will list all commit records associated with this email address. We can check each commit record and see if it was created by the email address we want to delete.

Step 2: Rewrite the commit history

Once we have found all the commit records, we can use the following command to rewrite each commit record.

$ git filter-branch --commit-filter '
        if [ "$GIT_AUTHOR_EMAIL" = "email_address" ];
        then
                GIT_AUTHOR_NAME="NewAuthorName";
                GIT_AUTHOR_EMAIL="new_email_address@example.com";
                git commit-tree "$@";
        else
                git commit-tree "$@";
        fi' HEAD

This command will loop through each commit and rewrite it to use the new author and email address.

Step 3: Force push to remote repository

Once we have finished rewriting the commit history, we need to push the changes to the remote repository. We can use the following command to force push to the remote branch. Note that this will overwrite the existing commit history in the remote repository.

$ git push --force

Conclusion

It is very common to use email addresses in Git, but sometimes we may need to delete or change the email address. This article provides some methods to remove or change email addresses in Git commits. Remember to use caution when changing or rewriting Git commit history.

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