如何在Git仓库中忽略当前所有额外文件？附相关Git命令疑问

You’re right that path/* is too blunt—it ignores everything in that directory, including new files you might want to track later. The fix is to explicitly list only the existing untracked files in your .gitignore instead of using a wildcard. Here’s how to do that efficiently:

Quick One-Liner to Auto-Add Existing Untracked Files #

If you want to target a specific directory (e.g., temp/), run this in your repo root:

git status --porcelain | grep '^?? temp/' | sed 's/^?? //' >> .gitignore

Let me break down what each part does:

• git status --porcelain: Outputs a clean, machine-readable list of untracked files (prefixed with ??).
• grep '^?? temp/': Filters the list to only include untracked files under temp/.
• sed 's/^?? //': Strips the ?? prefix to get just the file path.
• >> .gitignore: Appends these paths to your .gitignore file (so you don’t overwrite existing entries).

If you want to capture all untracked files in the entire repo, skip the grep step:

git status --porcelain | grep '^??' | sed 's/^?? //' >> .gitignore

Pro Tips Before Running #

• Preview first: Run the command without the >> .gitignore part to see exactly which files will be added—this avoids accidentally ignoring something you want to track.
• Avoid duplicates: While duplicate entries in .gitignore don’t cause harm, you could add a quick check to skip existing entries if you want a cleaner file. For most cases, though, the one-liner works perfectly fine.

This is a great question, and it comes down to Git’s core design philosophy: minimalism and modularity. Git focuses on essential version control tasks, leaving helper utilities to third-party tools or user scripts. Here’s a deeper breakdown:

• .gitignore is just plain text: It’s a simple text file, so modifying it doesn’t require a dedicated Git command. You can use any text editor or basic shell commands to edit it—Git doesn’t need to add extra complexity here.
• Third-party tools fill the gap: Tools like git-extras include a git ignore command that lets you add files/patterns with a single line (e.g., git ignore "*.log" or git ignore temp/file.txt). These are optional add-ons for users who want that convenience.
• Flexibility over presets: Every repo has unique ignore needs—some users want wildcards, some want explicit files, others use global .gitignore files. A built-in command would have to cover all these cases, which could get messy. Git prefers to let users tailor their .gitignore to their specific workflow.

If you find yourself needing this functionality often, installing git-extras is a great way to add it without cluttering core Git.

内容的提问来源于stack exchange，提问作者mazunki