Creating branches with git branch - Quick Revision & Summary

Recall & Review

beginner

What does the command git branch do?

It lists all the branches in your repository and shows which branch you are currently on.

beginner

How do you create a new branch named feature using git?

Use the command git branch feature to create a new branch called feature.

beginner

Does git branch new-branch switch you to the new branch?

No, it only creates the branch. You stay on the current branch until you use git checkout new-branch or git switch new-branch.

intermediate

What command creates and switches to a new branch in one step?

Use git checkout -b branch-name or git switch -c branch-name to create and switch to a new branch at once.

beginner

Why use branches in git?

Branches let you work on different features or fixes separately without changing the main code. It’s like having separate workspaces for different tasks.

What does git branch without arguments do?

A Lists all branches and shows the current branch

B Creates a new branch

C Deletes a branch

D Switches to a branch

git branch alone lists all branches and highlights the current one.

Which command creates a new branch called dev?

A git branch dev

B git checkout dev

C git switch dev

D git merge dev

git branch dev creates a new branch named dev without switching to it.

After running git branch feature, what is your current branch?

A feature

B main (or current branch before command)

C detached HEAD

D No branch

The command creates the branch but does not switch to it, so you stay on your current branch.

Which command both creates and switches to a new branch named test?

A git merge test

B git branch test

C git branch -d test

D git checkout -b test

git checkout -b test creates and switches to the test branch in one step.

Why is branching useful in git?

A To delete old code

B To speed up the computer

C To work on different tasks separately

D To backup files

Branches let you work on different features or fixes without affecting the main code.

Explain how to create a new branch and switch to it in git.

Think about commands that create and switch branches.

Why should you use branches when working with git?

Imagine working on different projects at the same time.

Practice

1. What does the command git branch new-feature do?

easy

A. Creates a new branch named 'new-feature' without switching to it

B. Creates and switches to a new branch named 'new-feature'

C. Deletes the branch named 'new-feature'

D. Merges 'new-feature' branch into the current branch

Solution

1. Step 1: Understand the git branch command

   The command git branch <branch-name> creates a new branch but does not switch to it.

2. Step 2: Analyze the given command

   git branch new-feature creates a branch called 'new-feature' but stays on the current branch.

3. Final Answer:

   Creates a new branch named 'new-feature' without switching to it -> Option A

4. Quick Check:

   git branch creates branch only [OK]

Hint: git branch creates branch but does not switch [OK]

Common Mistakes:

• Thinking it switches to the new branch automatically
• Confusing branch creation with branch deletion
• Assuming it merges branches

2. Which of the following is the correct syntax to create a branch named feature1 using git?

easy

A. git branch -c feature1

B. git create branch feature1

C. git branch feature1

D. git new branch feature1

Solution

1. Step 1: Recall the correct git branch creation syntax

   The correct syntax to create a branch is git branch <branch-name>.

2. Step 2: Check each option

   git branch feature1 matches the correct syntax exactly: git branch feature1. Others are invalid commands.

3. Final Answer:

   git branch feature1 -> Option C

4. Quick Check:

   Correct syntax = git branch <name> [OK]

Hint: Use 'git branch branch-name' to create branch [OK]

Common Mistakes:

• Using incorrect flags like -c
• Adding extra words like 'create' or 'new'
• Confusing branch creation with checkout

3. Given the commands:
git branch test-branch
git branch
What will be the output of git branch?

medium

A. main\ntest-branch

B. main\n* test-branch

C. * test-branch

D. * main\n test-branch

Solution

1. Step 1: Understand branch creation and listing

   git branch test-branch creates a new branch but does not switch to it. The current branch remains the same.

2. Step 2: Check the output of git branch

   The output lists all branches. The current branch is marked with an asterisk (*). Since we did not switch, the current branch is still 'main'.

3. Final Answer:

   * main\n test-branch -> Option D

4. Quick Check:

   Current branch marked *; new branch listed but not active [OK]

Hint: New branch created but current branch stays same [OK]

Common Mistakes:

• Assuming new branch is active immediately
• Missing the asterisk for current branch
• Listing branches without indentation or markers

4. You run git branch new-feature but then try git checkout new-feature and get an error. What is the most likely cause?

medium

A. You misspelled the branch name when checking out

B. You need to use git switch instead of git checkout

C. The branch was not created because of a syntax error

D. You are not in a git repository

Solution

1. Step 1: Understand the error context

   If git checkout new-feature fails after creating the branch, the branch might not exist under that exact name.

2. Step 2: Check common causes

   Most often, the branch name is misspelled or has a typo when checking out. Other options are less likely if branch creation succeeded.

3. Final Answer:

   You misspelled the branch name when checking out -> Option A

4. Quick Check:

   Branch name typo causes checkout error [OK]

Hint: Check branch name spelling before checkout [OK]

Common Mistakes:

• Assuming checkout command is deprecated
• Ignoring typos in branch names
• Not verifying current directory is a git repo

5. You want to create a new branch featureX and immediately start working on it. Which sequence of commands correctly achieves this?

hard

A. git checkout -b featureX

B. All of the above

C. git branch featureX\ngit switch featureX

D. git branch featureX\ngit checkout featureX

Solution

1. Step 1: Understand branch creation and switching

   Creating a branch and switching to it can be done in multiple ways: using separate commands or combined commands.

2. Step 2: Analyze each option

   git branch featureX\ngit checkout featureX creates the branch then switches using checkout. git checkout -b featureX creates and switches in one step. git branch featureX\ngit switch featureX creates then switches using the newer 'git switch' command. All are valid.

3. Final Answer:

   All of the above -> Option B

4. Quick Check:

   Multiple valid ways to create and switch branch [OK]

Hint: Use 'git checkout -b' or 'git switch -c' to create and switch [OK]

Common Mistakes:

• Thinking only one command works
• Confusing 'git switch' with 'git checkout'
• Not knowing combined commands exist