What we need.

1. A Computer
2. Git CLI
3. Some Basic Terminal commands

How to Install Git CLI

First go to http://git-scm.com/ and download latest git cli.

Now double click it and install it default.

Now we have installed git cli on our pc. Now let’s create a repository.

What is Git?

Git is a version control system, Which can keep track of every modification to the code in some special kind of database. If developer made a mistake, they can reverse the changes to the previous commit.

How to use git.

First you need a project that will you work on.

In my case, I will create a project. Now open terminal or cmd in that project folder and type git init.

So now we just initialized a repository in that project folder. Now we have the version control system of that project. But first we need to create a commit.

What is a git commit?

You can say it as a restore point for your code. Which you can go to, if you have messed up your code or something else.

How to create a git commit?

1. You need to stage the files for commit. We want to commit all the files so I will type git add ., Here . represents all files. You can give file names instead of .. You can see status of the files by typing git status. You can also remove files by typing git rm <FILE NAME>. (THIS WILL DELETE THE FILE)
2. Now, we have all the files staged and ready to commit. Type git commit -m "YOUR MESSAGE", -m represents the message, You can type any message you want.
3. To see all the commits, You can type git log.

How to ignore a file or folder from git add .?

To ignore a file or folder, you need to create a special file called .gitignore. Whatever you will type in this file, Git will ignore them.

FOR EXAMPLE

I want to ignore node_modules folder. So I created a file named .gitignore in my project level directory and typed node_modules in .gitignore file. Now if you stage all the files with git add . and see the status with git status. You will see that my node_modules directory isn’t staged, It is now ignored by git.

How to revert back to a commit?

First you need the commit id, You can get it by typing git log. You can see all the commits you have in your project.

Now type git reset <ID> if you want to keep the changes you made but restore the commit. If you want to purge the changes you need to give git reset --hard <ID>, It will purge all the changes you did. NOTE: Your commit ID will be in place of <ID>.

You can download this REPO from my Github.

Visit this Project on Github