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Git User Handbook

The Git cheat sheet presented in this DevOps tutorial is designed for those who have an interest in learning file management using Git as a tool. This cheat sheet will be a handy reference not only when you learn Git but when you start working with it too. Don’t worry if you are a beginner and have no idea about how Git works. Intellipaat’s Git cheat sheet will give you a quick reference to the basics that you must know.

What is Git?

Git is a DevOps tool that is used as a version-control system for tracking the changes happening in system files and coordinating the work on those files among a group of people. In the software development field, Git is used in source code management and for tracking the changes made in any file.

• Git is a distributed version control and source code management system with an emphasis on speed.
• It is a repository used to manage projects, the set of files, as they change over time.
• Using Git, every code change or commit we make gets updated in the development code of a project.

Watch this Git Tutorial for Beginners video:

Process Flow

It shows the process flow with components used to perform certain tasks:

• Plan: It can be created or deleted by itself based on the updates in the source repository.
• Code: It is the statement written to perform a task in a repository.
• Shared repository: It is the repository that is shared among several members in order to perform a task.
• Continuous integration: It helps in updating a repository with the changes made in the code and provides integration with the changes, time to time.
• Build: It is used to manually build products and dependencies to Git.
• Configuration management: It is a process of tracking and controlling the changes made in a system.
• Deploy: Deploy is the process of pushing the code to a remote server.

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Version Control

Version control is the management of changes made to the code, documents, programs, large sites, and other information. The changes are termed as versions.

A version control system (VCS) is used to perform the following:

• It allows developers to work simultaneously.
• VCS does not allow overwriting each other’s changes.
• It maintains a history of every version.

There are two types of version control systems:

• Centralized VCS
• Distributed VCS

Our DevOps tool, Git falls under the category of distributed VCS.

Life Cycle

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Git and GitHub

Git is a VCS that supports distributed nonlinear workflows by providing data assurance for developing quality software.

Its features are as follows:

• Distributed: A distributed development of code
• Compatible: Works with existing systems and protocols
• Non-linear: Allows the non-linear development of code
• Branching: Easy to create and merge branches
• Lightweight: Lossless compression
• Speed: Faster than the remote repository
• Open-source: A free tool and hence economical
• Reliable: Not viable to any loss of data upon crashes
• Secure: Uses SHA1 and checksum

For more information, visit the Git vs Github blog by Intellipaat.

Git Operations and Commands

Git Configuration

• For the initial configuration of username, email, and code highlighting (optional):

$git config -- global user.name”firstname lastname”
$git config -- global user.email” [email protected]”
$git config -- global color.ui true (enables code highlights)
$git config --list

Initializing Git

• To initialize:

$git init

• To know the status:

$git status

Adding and Removing Files

• To add a file:

$git add

• To add multiple files:

$git add <2nd filename> <3rd filename>

• To add all the updated files:

$git add --all ( use -A instead of -all too )

• To remove files:

$git rm -r 

Committing Changes

• To pass a message, use ‘commit’ with ‘-m’:

$git commit -m “body_of_message”

• To amend the last commit or the last message:

$git commit --amend -m “new_message”

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Pushing and Pulling

Here, a remote repository typically represents a remote server or a Git server.

• To create a remote repository via GitHub, go to:

https://github.com/YourUsername/appname.git

• To add a link:

$git remote add origin

• To push files:

$git push -u origin master

• To clone files:

$git clone 

Branching and Merging

Following are the branching and merging commands for GIT :

Learn more about the basic commands in this Git Tutorial by Intellipaat.

Sharing and Updating Projects

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Inspection and Comparison

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