Git与GitHub中添加文件时出现致命错误的解决咨询

Hey there, sorry to hear you're stuck with this frustrating Git error. Let's walk through the most common causes and fixes to get you back on track:

1. Check File Permissions #

Git might be unable to read or modify certain files due to permission issues.

• First, verify the permissions of your files and directories. On Linux/macOS, run ls -l to see ownership and permissions.
• Adjust permissions if needed—for most cases, setting read/write for your user and read-only for others works:

  chmod -R 644 .
  

• If you're not the owner of the files, use sudo chown -R $USER:$USER . to take ownership (replace $USER with your username).

2. Look for Oversized Files #

Git has a default threshold for large files (usually around 100MB), and adding files beyond this can trigger the error.

• Find files larger than 100MB with this command:

  find . -type f -size +100M
  

• Options to fix this:
  • Remove the large file if it's not needed for the repo.
  • Use Git LFS (Large File Storage) to track large files (install Git LFS first, then run git lfs track "*.largefileext" for the file type).
  • Increase Git's big file threshold temporarily:

    git config --global core.bigFileThreshold 200M
    

3. Verify Disk Space #

If your disk is full, Git can't write to its index file, leading to this error.

• On Linux/macOS, check disk usage with df -h.
• On Windows, open File Explorer, right-click your drive, and select "Properties" to see available space.
• Free up space by deleting unnecessary files, then try git add -A again.

4. Repair a Corrupted Git Index #

Sometimes the .git/index file (which tracks staged changes) gets corrupted.

• Back up the index first, then reset it:

  mv .git/index .git/index.backup
  git reset
  

• Now try running git add -A once more.

5. Fix Long or Special Character Paths #

On Windows, paths longer than 260 characters can cause issues, and special characters (like emojis, non-ASCII symbols) might also break Git.

• For long paths: Enable Git's long path support:

  git config --global core.longpaths true
  

• For special characters: Rename files/folders to use plain ASCII characters and shorter names, then retry the add command.

6. Double-Check Repository Initialization #

If this is a brand-new project, make sure you've initialized the Git repo first:

git init

If none of these fixes work, try adding files one by one or in small batches (git add file1.txt file2.md) to pinpoint which specific file is causing the problem—this can help narrow down edge cases we might have missed.

内容的提问来源于stack exchange，提问作者Aman Singh