Git - Online Repositories

GitHub is a web-based hosting service for software development projects that uses the Git revision control system. It also has their standard GUI application available for download (Windows, Mac, GNU/ Linux) directly from the service's website. But in this session, we will see only CLI part.
Go to github.com. If you already have the GitHub account, then login using that account or create a new one. Follow the steps from github.com website to create a new repository.
Tom decides to use the GitHub server. To start a new project, he creates a new directory and one file inside that.
[tom@CentOS]$ mkdir github_repo

[tom@CentOS]$ cd github_repo/

[tom@CentOS]$ vi hello.c

[tom@CentOS]$ make hello
cc hello.c -o hello

[tom@CentOS]$ ./hello

The above command will produce the following result:
Hello, World !!!

After verifying his code, he initializes the directory with the git init command and commits his changes locally.
[tom@CentOS]$ git init
Initialized empty Git repository in /home/tom/github_repo/.git/

[tom@CentOS]$ git status -s
?? hello
?? hello.c

[tom@CentOS]$ git add hello.c

[tom@CentOS]$ git status -s
A hello.c
?? hello

[tom@CentOS]$ git commit -m 'Initial commit'

After that, he adds the GitHub repository URL as a remote origin and pushes his changes to the remote repository.
[tom@CentOS]$ git remote add origin https://github.com/kangralkar/testing_repo.git

[tom@CentOS]$ git push -u origin master

Push operation will ask for GitHub user name and password. After successful authentication, the operation will succeed.
The above command will produce the following result:
Username for 'https://github.com': kangralkar
Password for 'https://kangralkar@github.com': 
Counting objects: 3, done.
Writing objects: 100% (3/3), 214 bytes, done.
Total 3 (delta 0), reused 0 (delta 0)
To https://github.com/kangralkar/test_repo.git
 * [new branch]      master −> master
 Branch master set up to track remote branch master from origin.

From now, Tom can push any changes to the GitHub repository. He can use all the commands discussed in this chapter with the GitHub repository.
Tom successfully pushed all his changes to the GitHub repository. Now, other developers can view these changes by performing clone operation or updating their local repository.
Jerry creates a new directory in his home directory and clones the GitHub repository by using the git clone command.
[jerry@CentOS]$ pwd
/home/jerry

[jerry@CentOS]$ mkdir jerry_repo

[jerry@CentOS]$ git clone https://github.com/kangralkar/test_repo.git

The above command produces the following result:
Cloning into 'test_repo'...
remote: Counting objects: 3, done.
remote: Total 3 (delta 0), reused 3 (delta 0)
Unpacking objects: 100% (3/3), done.

He verifies the directory contents by executing the ls command.
[jerry@CentOS]$ ls
test_repo

[jerry@CentOS]$ ls test_repo/
hello.c


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