====== Ubuntu - GIT - Revert or amend last commit ======

Committed some changes, didn’t push them, and need to amend the commit:

<code git>
git commit --amend -a -m "Commit message"
</code>

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Committed some changes, pushed them, and need to amend the commit, do the revert operation instead, since someone might’ve already used your changes.

Committed some changes, didn’t push them, and need to undo the commit:

<code git>
git reset --hard HEAD^
</code>

This will just toss away the last commit completely.

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Committed some changes, pushed them, and need to undo the commit:

<code git>
git revert HEAD
</code>

This will automatically create a new commit, reverting the changes from the previous