git show for commit details - Commands & Configuration

Introduction

Sometimes you want to see exactly what changed in a specific saved version of your project. The git show command lets you look at the details of one commit, including the message and the changes made.

When you want to review what changes were made in a particular commit before sharing or merging.

When you need to check the commit message and the files changed for a specific commit ID.

When you want to understand the history of a file by looking at changes in past commits.

When you want to verify who made a change and when it was done.

When you want to debug by seeing the exact code differences introduced in a commit.

Commands

This command shows a short list of recent commits with their IDs and messages, so you can pick the commit ID to inspect.

Terminal

git log --oneline

Expected Output

a1b2c3d Fix typo in README

9f8e7d6 Add user login feature

4e5f6a7 Initial commit

→

--oneline - Shows each commit in one line with short ID and message

This command shows the full details of the commit with ID a1b2c3d, including author, date, commit message, and the code changes made.

Terminal

git show a1b2c3d

Expected Output

commit a1b2c3d4e5f67890123456789abcdef12345678

Author: Jane Doe <[e-mail]>

Date:   Fri Apr 26 10:00:00 2024 +0000



    Fix typo in README



diff --git a/README.md b/README.md

index e69de29..d95f3ad 100644

--- a/README.md

+++ b/README.md

@@ -1 +1,2 @@

-Hello Wrold

+Hello World

+This is the updated README file.

Key Concept

If you remember nothing else from this pattern, remember: git show lets you see exactly what changed and why in a single commit.

Common Mistakes

Running git show without a commit ID

Git will show the details of the current HEAD commit, which might not be the one you want to inspect.

Always specify the commit ID you want to see, like git show a1b2c3d.

Using a wrong or incomplete commit ID

Git will return an error saying it cannot find the commit.

Use git log --oneline to get the exact commit ID or the first few characters that uniquely identify it.

Summary

Use git log --oneline to find the commit ID you want to inspect.

Use git show <commit-id> to see detailed information about that commit.

This helps you understand what changed, who changed it, and why.