git fsck for repository integrity - Cheat Sheet & Quick Revision

Recall & Review

beginner

What does the git fsck command do?

It checks the integrity and validity of objects in a Git repository to find any corruption or missing objects.

beginner

What kind of problems can git fsck detect?

It can detect corrupted objects, missing objects, dangling commits, and broken links between objects.

beginner

How do you run git fsck on a repository?

Open a terminal in the repository folder and run git fsck. It will output any problems found or nothing if all is good.

intermediate

What does it mean if git fsck reports 'dangling commit'?

It means there is a commit object not reachable from any branch or tag, often safe but worth checking.

intermediate

Why is running git fsck useful before pushing or pulling?

It helps ensure your local repository is healthy and free of corruption, preventing errors during push or pull operations.

What is the primary purpose of the git fsck command?

A Create a new branch

B Fetch changes from a remote repository

C Commit changes to the repository

D Check repository integrity and find corrupted objects

git fsck checks the repository for corrupted or missing objects to ensure integrity.

If git fsck finds no output, what does that mean?

A The command failed to run

B The repository has no integrity issues

C There are many errors

D The repository is empty

No output means git fsck found no problems in the repository.

What does a 'dangling blob' message from git fsck indicate?

A An object exists but is not referenced by any commit

B A branch is missing

C A commit is corrupted

D The repository is locked

A dangling blob means the object exists but is not linked to any commit or branch.

Which command would you use to check the integrity of your Git repository?

A git status

B git log

C git fsck

D git clone

git fsck is the command designed to check repository integrity.

What should you do if git fsck reports corrupted objects?

A Try to recover or replace corrupted objects before continuing work

B Ignore and continue working

C Delete the repository

D Run <code>git push</code> immediately

Corrupted objects can cause errors; recovering or fixing them is important to keep the repository healthy.

Explain what git fsck does and why it is important for repository health.

Think about how checking your work for mistakes helps avoid bigger problems later.

Describe how you would use git fsck to troubleshoot a repository issue.

Imagine you are checking your car for problems before a trip.