git_cli_beginners_notes.md

🧙‍♂️ Git Magic: Command Line Edition

🔧 Configure Your Git Persona

Before using Git, you need to set up your identity so that your commits are properly attributed to you.

git config --global user.email "you@example.com"
git config --global user.name "Your Name"

If you want to set it only for a specific project, remove --global.

To verify your configuration:

git config --list

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🛠️ Creating a New Repository

Steps:

1. Create a new project directory:

   mkdir my_project
   cd my_project

2. Initialize a Git repository:

   git init

This creates a hidden .git folder that tracks changes in your project.

To check if your repository has been initialized:

git status

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📁 Adding Files to Git

Add files to the staging area:

• Add a specific file:

  git add filename

• Add all files in the directory:

  git add .

Commit changes:

git commit -m "Your commit message"

To check the current status of your repository:

git status

To view commit history:

git log

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🌐 Connecting to a Remote Repository

Steps:

1. Create a repository on GitHub, GitLab, or Bitbucket.
2. Link your local repository to the remote repository:

   git remote add origin <remote_url>

3. Verify the remote repository:

   git remote -v

4. Push your local commits to the remote repository:

   git push -u origin master

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🕵️‍♂️ Cloning a Repository

To download an existing repository from a remote server:

git clone <repository_url>

To clone into a specific directory:

git clone <repository_url> my_directory

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🚨 Undoing Changes

Undo last commit (without losing changes):

git reset --soft HEAD~1

Undo last commit (discarding changes):

git reset --hard HEAD~1

Remove a file from the staging area:

git reset HEAD filename

Discard local changes in a file:

git checkout -- filename

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🌿 Working with Branches

Create a new branch:

git branch new-branch

Switch to a branch:

git checkout new-branch

Create and switch to a branch in one step:

git checkout -b new-branch

Merge a branch into master:

git checkout master
git merge new-branch

Delete a branch:

git branch -d new-branch

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🔄 Syncing and Updating

Pull latest changes from remote:

git pull origin master

Fetch updates without merging:

git fetch origin

Rebase to keep a clean commit history:

git rebase origin/master

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🏷️ Tagging Commits

Create a tag:

git tag v1.0.0

Push tags to remote:

git push origin --tags

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🌟 Stashing Changes

Save unfinished work:

git stash

List all stashes:

git stash list

Retrieve and apply the latest stash:

git stash pop

Apply a specific stash:

git stash apply stash@{0}

Drop a stash:

git stash drop stash@{0}

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🧙‍♂️ Summary Table

Command	Description
git config --global user.name "Name"	Set global username
git config --global user.email "email"	Set global email
git init	Initialize a new repository
git add .	Stage all changes
git commit -m "message"	Commit staged changes
git remote add origin <url>	Link remote repository
git push -u origin master	Push code to master branch
git pull origin master	Pull latest changes
git branch new-branch	Create a new branch
git checkout new-branch	Switch to a branch
git checkout -b new-branch	Create and switch to a branch
git merge new-branch	Merge a branch into master
git branch -d new-branch	Delete a branch
git log	View commit history
git status	Check current state
git reset --soft HEAD~1	Undo last commit (keep changes)
git reset --hard HEAD~1	Undo last commit (discard changes)
git checkout -- filename	Discard local changes
git stash	Stash changes
git stash pop	Apply stashed changes
git stash list	List all stashes
git tag v1.0.0	Create a tag
git push origin --tags	Push tags to remote
git fetch origin	Fetch updates from remote
git rebase origin/master	Rebase local branch

Now, you're ready to master Git like a pro! 🚀