Git Version Control: Essential Commands and Workflow FAQ
Git Version Control: Essential Commands and Workflow FAQ
A comprehensive technical guide to mastering Git, designed to help developers navigate version control, resolve merge conflicts, and implement efficient branching strategies.
What is the fundamental difference between git merge and git rebase?
Git merge combines two branches by creating a new 'merge commit' that preserves the complete history of both branches. Git rebase moves the entire feature branch to begin on the tip of the main branch, creating a linear project history by rewriting the commit sequence.
How do I resolve a merge conflict in Git?
When a conflict occurs, Git marks the disputed files. You must manually open these files, choose which code changes to keep, remove the conflict markers (<<<<, ====, >>>>), and then run 'git add' followed by 'git commit' to finalize the resolution.
What is the difference between git fetch and git pull?
Git fetch downloads the latest changes from a remote repository to your local copy but does not integrate them into your current working files. Git pull performs a fetch and immediately follows it with a merge, updating your current branch with the remote changes.
How can I undo the most recent commit that has not yet been pushed?
To undo a commit while keeping your changes in the staging area, use 'git reset --soft HEAD~1'. If you want to completely discard the changes and return the code to the previous state, use 'git reset --hard HEAD~1'.
What is git stash and when should I use it?
Git stash temporarily shelves uncommitted changes, allowing you to switch branches without committing unfinished work. Use 'git stash' to save your current state and 'git stash pop' to bring those changes back once you return to the original branch.
How do I create and switch to a new branch in a single command?
The command 'git checkout -b [branch-name]' creates a new branch and immediately switches your working directory to it. In newer versions of Git, you can also use 'git switch -c [branch-name]' to achieve the same result.
What is the purpose of a .gitignore file?
A .gitignore file tells Git which files or directories to ignore and not track in the repository. This is typically used for sensitive information like API keys, environment variables, and dependency folders such as node_modules.
How do I revert a specific commit that has already been pushed to a remote server?
Use 'git revert [commit-hash]' to create a new commit that inverses the changes of the targeted commit. This is the safest method for public repositories because it does not rewrite the project history, avoiding disruptions for other collaborators.
What is the difference between git reset and git revert?
Git reset removes commits from the history entirely, effectively 'rewinding' the branch to a previous state. Git revert adds a new commit that undoes the changes of a previous one, keeping the history intact and providing a clear audit trail.
How can I view a concise history of commits in a Git repository?
The command 'git log --oneline' provides a condensed view of the commit history, showing only the commit hash and the commit message. For a more visual representation of branches and merges, use 'git log --graph --oneline --all'.
See also
- How to Start Learning Programming for Beginners: A 2024 Roadmap
- Best Practices for Writing Clean Code: The Professional Standard
- How to Solve Common Bugs in Python: A Debugging Framework
- What is the Best Web Development Framework for 2024?