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---
layout: default
title: Changing author info
description: How to modify author info in your repo's history
categories: git_ninjutsu
---
<p class="intro">If you need to modify the author info in your repo's history, you can do so with this script.</p>
<p class="attention"><strong>Big bold warning</strong> This action is destructive to your repo's history. It's best to do this on a clone, just in case. Also beware that this should not be performed on a repo that has been shared with others. Use at your own risk.</p>
{% highlight bash %}
#!/bin/sh
git filter-branch --env-filter '
an="$GIT_AUTHOR_NAME"
am="$GIT_AUTHOR_EMAIL"
cn="$GIT_COMMITTER_NAME"
cm="$GIT_COMMITTER_EMAIL"
if [ "$GIT_COMMITTER_EMAIL" = "your@email.to.match" ]
then
cn="Your New Committer Name"
cm="Your New Committer Email"
fi
if [ "$GIT_AUTHOR_EMAIL" = "your@email.to.match" ]
then
an="Your New Author Name"
am="Your New Author Email"
fi
export GIT_AUTHOR_NAME="$an"
export GIT_AUTHOR_EMAIL="$am"
export GIT_COMMITTER_NAME="$cn"
export GIT_COMMITTER_EMAIL="$cm"
'
{% endhighlight %}
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