git 仓库清理

本文提供了从 Git 存储库中识别和删除不必要的文件的策略和工具，以优化存储空间并提高性能。讨论的主要问题是悬挂对象、大文件和 untr 的累积

识别和删除不必要的文件

要从 git 存储库中识别并删除不必要的文件，请按照以下步骤操作：

• 运行 git gc --prune 删除悬挂对象：git gc --prune to remove dangling objects: This command removes objects that are unreachable from any commit. Dangling objects can accumulate over time when you delete branches or commits.
• Use git filter-branch to rewrite history: This command allows you to remove or modify specific files from the entire history of a branch. However, it's important to proceed cautiously as it rewrites the history of the repository.
• Check for large files: Large files can take up a significant amount of repository space. Use git ls-files -s to identify large files and consider moving them to a separate location.
• Review untracked files: Untracked files are not part of any commit and can be safely removed. Use git clean -n to list untracked files and git clean -f to remove them.

Best Practices for Cleanup After Merge or Branch Deletion

After a merge or branch deletion, follow these cleanup best practices:

• Remove merged branches: After merging a branch, delete the merged branch to avoid clutter. Use git branch -d <branch-name> to delete the branch.
• Delete remote branches: If you have deleted a branch locally but it still exists on the remote repository, delete it remotely using git push <remote-name> --delete <branch-name>.
• Prune the reflog: The reflog records all actions made to the repository. Use git reflog expire --expire=<duration> to prune old entries in the reflog.
• Reset HEAD: If you want to revert the repository to a specific commit, use git reset --hard <commit-hash> 此命令删除从任何提交中都无法访问的对象。当您删除分支或提交时，悬空对象会随着时间的推移而累积。

使用git filter-branch重写历史记录：

检查大文件：
• 大文件可能会占用大量存储库空间。使用 git ls-files -s 识别大文件并考虑将它们移动到单独的位置。
查看未跟踪的文件：
• 未跟踪的文件不属于任何提交，可以安全删除。使用 git clean -n 列出未跟踪的文件并使用 git clean -f 删除它们。
合并或删除分支后清理的最佳实践
• 合并或删除后删除分支，请遵循以下清理最佳实践：
• 删除合并的分支：合并分支后，删除合并的分支以避免混乱。使用 gitbranch -d 来删除分支。

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