git show for commit details - Cheat Sheet & Quick Revision

Recall & Review

beginner

What does the command git show <commit-hash> do?

It displays detailed information about a specific commit, including the commit message, author, date, and the changes made in that commit.

beginner

Which information is NOT shown by git show by default?

It does not show the full commit history or logs of other commits; it only shows details for the specified commit.

beginner

How can you use git show to see the changes introduced by the latest commit?

Run git show HEAD to display details of the most recent commit on the current branch.

beginner

What does the diff output in git show represent?

It shows the lines added and removed in the files changed by the commit, helping you understand what was modified.

intermediate

Can git show display information about tags or branches?

Yes, you can use git show <tag-name> or git show <branch-name> to see the commit details those references point to.

What does git show <commit-hash> display?

A Details of a specific commit including changes

B List of all branches

C Status of untracked files

D Current working directory files

git show shows detailed info about one commit, including its changes.

Which command shows the latest commit details?

A git status

B git log --oneline

C git show HEAD

D git diff

git show HEAD shows the most recent commit details.

What does the diff section in git show output represent?

A Changes made in the commit

B List of branches

C Uncommitted changes

D Remote repository info

The diff shows lines added or removed in the commit.

Can git show be used with tags?

A Only with remote URLs

B No, it only works with commit hashes

C Only with branch names

D Yes, to show commit details for the tag

You can use git show <tag-name> to see the commit the tag points to.

Which of these is NOT shown by git show?

A Commit author

B Full commit history

C Commit message

D Changes made in commit

git show shows one commit, not the full history.

Explain how to use git show to view details of a specific commit and what information you expect to see.

Think about what you want to learn about a commit.

Describe the difference between git show and git log.

One shows one commit, the other shows many.

Practice

1. What does the git show command do?

easy

A. Displays detailed information about a specific commit

B. Deletes a commit from the history

C. Creates a new branch

D. Lists all branches in the repository

Solution

1. Step 1: Understand the purpose of git show

   The command git show is used to display detailed information about a commit, including changes made and commit message.

2. Step 2: Compare with other git commands

   Other options like deleting commits, creating branches, or listing branches do not match the function of git show.

3. Final Answer:

   Displays detailed information about a specific commit -> Option A

4. Quick Check:

   git show = commit details [OK]

Hint: Remember: git show reveals commit details quickly [OK]

Common Mistakes:

• Confusing git show with git branch commands
• Thinking git show deletes commits
• Assuming git show lists branches

2. Which of the following is the correct syntax to show details of the latest commit?

easy

A. git show latest

B. git show HEAD

C. git show commit

D. git show last

Solution

1. Step 1: Identify the reference for the latest commit

   The latest commit in git is referenced by HEAD.

2. Step 2: Check the correct git show syntax

   The correct command to show the latest commit details is git show HEAD. Other options like 'latest', 'commit', or 'last' are not valid git references.

3. Final Answer:

   git show HEAD -> Option B

4. Quick Check:

   HEAD = latest commit [OK]

Hint: Use HEAD to refer to the latest commit in git [OK]

Common Mistakes:

• Using invalid references like 'latest' or 'last'
• Omitting the commit reference
• Confusing git show syntax with other commands

3. Given the command git show 1a2b3c4, what will be displayed?

medium

A. An error saying commit not found

B. A list of all commits in the repository

C. The detailed commit information for commit hash 1a2b3c4

D. The current branch name

Solution

1. Step 1: Understand the command with commit hash

   The command git show 1a2b3c4 requests detailed info about the commit with hash starting 1a2b3c4.

2. Step 2: Identify expected output

   Git will display the commit message, author, date, and changes made in that commit. It does not list all commits or branch names.

3. Final Answer:

   The detailed commit information for commit hash 1a2b3c4 -> Option C

4. Quick Check:

   git show + hash = commit details [OK]

Hint: Use commit hash with git show to see that commit's details [OK]

Common Mistakes:

• Expecting a list of commits instead of one commit
• Confusing commit hash with branch name
• Assuming git show shows errors if commit exists

4. You run git show without any arguments but get an error. What is the likely cause?

medium

A. You are in a directory not initialized as a git repository

B. You forgot to specify a commit hash

C. Your git version is outdated

D. You have no internet connection

Solution

1. Step 1: Understand default behavior of git show

   Running git show without arguments shows the latest commit (HEAD) details if inside a git repo.

2. Step 2: Identify cause of error

   If an error occurs, it is often because the current folder is not a git repository, so git commands fail.

3. Final Answer:

   You are in a directory not initialized as a git repository -> Option A

4. Quick Check:

   git show error = not a git repo [OK]

Hint: Check if you are inside a git repository folder [OK]

Common Mistakes:

• Assuming commit hash is always required
• Blaming internet connection for local git commands
• Thinking git version causes this error

5. You want to see the detailed changes of the commit before the latest one. Which command should you use?

hard

A. git show HEAD~2

B. git show HEAD^2

C. git show HEAD-1

D. git show HEAD~1

Solution

1. Step 1: Understand git commit references

   HEAD points to the latest commit. HEAD~1 means one commit before HEAD (the parent commit).

2. Step 2: Analyze options

   HEAD^2 refers to the second parent of a merge commit, HEAD~2 is two commits before HEAD, and HEAD-1 is not a valid git reference.

3. Step 3: Choose the best option for one commit before latest

   git show HEAD~1 clearly shows the commit before the latest one.

4. Final Answer:

   git show HEAD~1 -> Option D

5. Quick Check:

   HEAD~1 = commit before latest [OK]

Hint: Use HEAD~1 to refer to the commit before the latest [OK]

Common Mistakes:

• Confusing HEAD^2 with HEAD~1
• Using HEAD~2 which is two commits back
• Using invalid reference like HEAD-1