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Git Essentials

Git Essentials

By : Ferdinando Santacroce
3.9 (9)
Buy this Book
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Git Essentials

Git Essentials

3.9 (9)
By: Ferdinando Santacroce
Buy this Book

Overview of this book

If you are a software developer with little or no experience of versioning systems, or are familiar with other centralized versioning systems, then this book is for you. If you have some experience working with command lines or using Linux admin or just using Unix and want to know more about Git, then this book is ideal for you.
Table of Contents (9 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
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1
1. Getting Started with Git
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1. Getting Started with Git
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Installing Git
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Running our first Git command
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Summary
2
2. Git Fundamentals – Working Locally
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2. Git Fundamentals – Working Locally
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Repository structure and file status life cycle
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Working with repositories
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Viewing the history
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Taking another way – Git branching
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Stashing
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Summary
3
3. Git Fundamentals – Working Remotely
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3. Git Fundamentals – Working Remotely
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Working with remotes
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Summary
4
4. Git Fundamentals – Niche Concepts, Configurations, and Commands
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4. Git Fundamentals – Niche Concepts, Configurations, and Commands
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Dissecting the Git configuration
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Git aliases
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Git references
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World-wide techniques
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Tricks
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Summary
5
5. Obtaining the Most – Good Commits and Workflows
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5. Obtaining the Most – Good Commits and Workflows
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The art of committing
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Adopting a workflow – a wise act
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Summary
6
6. Migrating to Git
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6. Migrating to Git
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Before starting
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Working on a Subversion repository using Git
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Using Git with a Subversion repository
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Migrating a Subversion repository
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Comparing Git and Subversion commands
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Summary
7
7. Git Resources
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7. Git Resources
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Git GUI clients
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Building up a personal Git server with web interface
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Learning Git in a visual manner
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Git on the Internet
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Summary
8
Index
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Index

Git references

We said that a Git repository can be imagined as an acyclic graph, where every node, the commit, has a parent and a unique SHA-1 identifier. But during the previous chapters, we even used some references such as the HEAD, branches, tags, and so on.

Git manages these references as files in the .git/refs repository folder:

Git references

If you open one of those files, you will find it inside the SHA-1 of the commit they are tied to. As you can see, there are subfolders for tags and branches (called heads).

Symbolic references

The HEAD file instead is located in the .git folder, as shown in the following screenshot:

Symbolic references

HEAD is a symbolic reference; symbolic references are references that point to other references, using the ref: <reference> syntax. In this case, the HEAD is currently pointing to the master branch; if you check out another branch, you will see the file's content change, as shown in the following screenshot:

Symbolic references

Ancestry references

In Git you often need to reference the past...

Visually different images
CONTINUE READING
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Tech Concepts
36
Programming languages
73
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Git Essentials
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