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All about Version Control Git

Kapil Panchal - August 23, 2022

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All about Version Control Git

What is version control?


Version control is a system that keeps track of our files or projects.

So that we can have a reference of the changes that we made in that, particular file for future use.

It allows you to revert selected files to a previous state, revert the entire project to a previous state, compare changes over time, see who last modified something so that we can know what might be causing a problem, or what is the issue, who made it, and when with the details.

One major advantage when using a version control system is that if you do any mistakes or lose some of your files, you can easily recover them.

Types of version controls


Local version controls(VCS’s) - Programmers developed a local version control system that was based on a simple database that kept track of all the changes in the files.

RCS works based on keeping track of the differences between files in form of a patch set.

The other thing was that there was no work collaboration.

Centralized version controls (CVSS’s) - These systems have a single server that contains all the versioned files, and several users that check out files from that central place.

However, this setup had its own flaws. The most obvious is due to the single centralized server, which is the main area where an error can occur. If that server goes down due to any reasons, then during that particular time no one would be able to collaborate in the work or save versioned changes to the files/ repository they’re working on.

Whenever you have the entire history of the project in a single place, there is a high risk of losing everything in a few moments.

Distributed version controls (DVCS’s) - In a DVCS (such as Git), user don’t just check the files, but the repository, along with its full history.

Thus, if any server deteriorates due to these distributed systems where files are stored at different places, any of the client repositories can be copied back up to the server to restore it. So there is a full backup of every data.

Why Git?


The major difference between Git and any other version control system is the way Git thinks about its data and how it manages its data.

Git thinks of its data more like a difference between them. In Git, every time you commit or save the state of your project, Git basically remembers a picture or the blueprint of that and uses it as a reference to compare it with, what all your files look like at a moment and how it does look now at present.

This methodology makes git more efficient compared to other version control systems. So if there is no change in the files, Git doesn’t store that file again because a link to the previous identical file has been already stored once in the git.

Installing on Windows


The simple way is to go to the official Git website and click on https://git-scm.com/download/win it will be downloaded.

Setup


Git have git config command that lets you to see and update configuration variables on which Git depends.

Once you finish installing Git you should set your user name and email address.

Syntax -

  • $ git config --global user.name “yash shukla”
  • $ git config --global user.email yash@gmail.com

You need to do this only once, because Git will always use that information for the future reference if you do anything on that system

If you want to check your configuration settings, you can use the git config --list command to see all the Git setting list.

Example -

  • $ git config --list
  • User.name= yash shukla
  • User.mail=yash@gmail.com
  • Color.status=auto
  • Color.branch=auto

Git Basics


Creating a Repository

We can have a git repository in two ways.

Creating a new repository from the current working directory.

Or we can clone an existing repository from elsewhere in our system.

Initializing a Repository in an existing directory

If you have a project directory that is not yet under version control and you wish to start maintaining it with Git, then you first need to go to that project’s path or directory.

Syntax for windows -

  • $ cd /c/user/my_project
  • $ git init

It will create a new subdirectory with .git name which has all of your necessary repository files.

Now if you want to add existing files to version control, you should track those files and do an initial commit. You can do that first you need to type, a few git add commands to specify the files you want to track, and finally by a git commit.

Syntax -

  • $ git add *.c
  • $ git add LICENSE
  • $ git commit -m 'initial project version'
 

Cloning an existing Repository

If you want a copy of an existing Git repository let’s say, a project you’d want to contribute to, just use the command git clone.

Instead of getting just a working copy, Git receives a full copy of nearly all the data that the server has. That is git will pull down all the files, branches which were present earlier.

Even if your server disk gets corrupted due to any reasons, you can get the original state of the file back from the previous clone you performed.

Syntax - git clone .

Example - $ git clone https:/filename/folder/directory.

Checking file status

The main command to determine the files status is the git status command. If you run this command directly after a clone it shows the status of that file.

Example -

  • $ git status
  • On branch master
  • Your branch is up-to-date with ‘origin/master’.
  • Nothing to commit, working directory clean.

Tracking files

In order to track a new file, you use the command git add with the file name.

git1
git2

Committing changes

That is to save the changes which were made.

git3
git4

Conclusion


So in this blog we understood about version control systems, why we need, why git is better than others? how it helps us in managing our files/projects in repositories. We also learned about different commands of git like for saving the changes, adding the requests etc.

All about Version Control Git Table of Content 1. What is version control? 2. Types of version controls 3. Why Git? 4. Installing on Windows 5. Setup 6. Git Basics 6.1. Creating a Repository 6.2. Initializing a Repository in an existing directory 6.3. Cloning an existing Repository 6.4. Checking file status 6.5. Tracking files 6.6. Committing changes 7. Conclusion What is version control? Version control is a system that keeps track of our files or projects. So that we can have a reference of the changes that we made in that, particular file for future use. It allows you to revert selected files to a previous state, revert the entire project to a previous state, compare changes over time, see who last modified something so that we can know what might be causing a problem, or what is the issue, who made it, and when with the details. One major advantage when using a version control system is that if you do any mistakes or lose some of your files, you can easily recover them. Types of version controls Local version controls(VCS’s) - Programmers developed a local version control system that was based on a simple database that kept track of all the changes in the files. RCS works based on keeping track of the differences between files in form of a patch set. The other thing was that there was no work collaboration. Centralized version controls (CVSS’s) - These systems have a single server that contains all the versioned files, and several users that check out files from that central place. However, this setup had its own flaws. The most obvious is due to the single centralized server, which is the main area where an error can occur. If that server goes down due to any reasons, then during that particular time no one would be able to collaborate in the work or save versioned changes to the files/ repository they’re working on. Read More: New Git Experience In Visual Studio Whenever you have the entire history of the project in a single place, there is a high risk of losing everything in a few moments. Distributed version controls (DVCS’s) - In a DVCS (such as Git), user don’t just check the files, but the repository, along with its full history. Thus, if any server deteriorates due to these distributed systems where files are stored at different places, any of the client repositories can be copied back up to the server to restore it. So there is a full backup of every data. Why Git? The major difference between Git and any other version control system is the way Git thinks about its data and how it manages its data. Git thinks of its data more like a difference between them. In Git, every time you commit or save the state of your project, Git basically remembers a picture or the blueprint of that and uses it as a reference to compare it with, what all your files look like at a moment and how it does look now at present. This methodology makes git more efficient compared to other version control systems. So if there is no change in the files, Git doesn’t store that file again because a link to the previous identical file has been already stored once in the git. Installing on Windows The simple way is to go to the official Git website and click on https://git-scm.com/download/win it will be downloaded. Setup Git have git config command that lets you to see and update configuration variables on which Git depends. Once you finish installing Git you should set your user name and email address. Syntax - $ git config --global user.name “yash shukla” $ git config --global user.email yash@gmail.com You need to do this only once, because Git will always use that information for the future reference if you do anything on that system If you want to check your configuration settings, you can use the git config --list command to see all the Git setting list. Example - $ git config --list User.name= yash shukla User.mail=yash@gmail.com Color.status=auto Color.branch=auto Git Basics Creating a Repository We can have a git repository in two ways. Creating a new repository from the current working directory. Or we can clone an existing repository from elsewhere in our system. Initializing a Repository in an existing directory If you have a project directory that is not yet under version control and you wish to start maintaining it with Git, then you first need to go to that project’s path or directory. Syntax for windows - $ cd /c/user/my_project $ git init It will create a new subdirectory with .git name which has all of your necessary repository files. Now if you want to add existing files to version control, you should track those files and do an initial commit. You can do that first you need to type, a few git add commands to specify the files you want to track, and finally by a git commit. Syntax - $ git add *.c $ git add LICENSE $ git commit -m 'initial project version' Searching for Dedicated ASP.Net Core Web Developer ? CONTACT US   Cloning an existing Repository If you want a copy of an existing Git repository let’s say, a project you’d want to contribute to, just use the command git clone. Instead of getting just a working copy, Git receives a full copy of nearly all the data that the server has. That is git will pull down all the files, branches which were present earlier. Even if your server disk gets corrupted due to any reasons, you can get the original state of the file back from the previous clone you performed. Syntax - git clone . Example - $ git clone https:/filename/folder/directory. Checking file status The main command to determine the files status is the git status command. If you run this command directly after a clone it shows the status of that file. Example - $ git status On branch master Your branch is up-to-date with ‘origin/master’. Nothing to commit, working directory clean. Tracking files In order to track a new file, you use the command git add with the file name. Committing changes That is to save the changes which were made. Conclusion So in this blog we understood about version control systems, why we need, why git is better than others? how it helps us in managing our files/projects in repositories. We also learned about different commands of git like for saving the changes, adding the requests etc.

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