Git Staging and Committing

Explain the Git staging area. What is the difference between git add, git commit, and git push?

Gitbeginner

// interview question

Explain the Git staging area. What is the difference between git add, git commit, and git push?

Sample answer

Git has three states: working directory (untracked changes), staging area (changes ready to commit), and repository (committed history). 'git add' moves changes to staging, 'git commit' saves staged changes to local repository, 'git push' uploads commits to remote. This workflow allows selective commits and careful change management.

Why this matters

The staging area is Git's key feature that separates it from older version control systems. It lets you prepare commits with exactly the changes you want, review before committing, and create atomic commits that represent single logical changes.

Code examples

Basic Git workflow

bash

# Check status (see staged/unstaged changes)
git status

# Stage specific file
git add app.js

# Stage all changes
git add .

# Commit staged changes
git commit -m "Add user authentication feature"

# Push to remote
git push origin main

Viewing changes

bash

# View unstaged changes
git diff

# View staged changes
git diff --staged

# View commit history
git log --oneline -10

# Unstage a file
git reset HEAD file.txt