We've all been there. Fingers flying across the keyboard, committing code like a superhero... then BAM! You accidentally added a rogue file to your staging area. Don't panic! Git has your back. The 'git undo add' command is your trusty sidekick in these situations.
More specifically, it's `git reset HEAD <file>`, where `<file>` is the name of the file you want to remove from the staging area. This command doesn't delete the file itself; it simply unstages it. Think of it as taking it out of the 'ready to commit' line-up.
For unstaging all files, you can use `git reset HEAD .`. This will unstage everything that's currently staged, giving you a clean slate to work with.
So, the next time you accidentally add a file, remember `git reset HEAD`. It's the key to a clean and organized commit history!
