In the mobile DevOps life cycle, one of the first phases is application development. Coding is one of the most important parts of the development life cycle, and managing that code is even more important in the long term.

When developers are continuously coding an application, managing that code becomes troublesome if not done properly. As the development progresses, code merges are more frequent and, with time, the development team grows quickly and more people need to integrate code with other developers.

Source code management becomes tricky and a very important part to focus on in order to ensure seamless development and code integration.

Let's take a real-world...

As we described earlier, repositories are a place to manage and share your project code. Git allows you to create public or private repositories. Public repositories are open for everybody, but you can include a license file that explains how you want the project to be shared with others.

Follow these steps to create a repository on GitHub:

1. Open a web browser, go to https://github.com/, and sign up for a new account by providing a username for your account and your email and password. You can skip this step if you already have an account on GitHub:

2. Once the signup is done, go to https://github.com/login and sign in to your newly created account on GitHub:

3. Once signed in, in the upper-right corner of the page, click + and then click New repository, as shown in the following screenshot:

4. On the next screen...

Organizations are a combination of multiple shared accounts and private repositories. Owners or administrators can manage access to the organization's data and projects.

Follow these steps to create your organization account on GitHub and invite users to join your organization on GitHub:

1. Log in to your GitHub account by going to https://github.com/login.
2. Once logged in, click on your profile photo, then click Your profile as shown in the following screenshot:

3. On the next screen, click on the Edit profile button:

4. From the left side of your page, under Personal settings, click on Organizations. Then, click on the New organization...

In this topic, we'll be discussing how to install Git on different operating systems including Windows, Linux, and Ubuntu.

Installing Git on Windows is as simple as installing any GUI-based application. Follow the steps to install Git on Windows:

1. To download the latest Git for Windows installer, go to https://git-scm.com/downloads. Select Windows and the download will start:

2. Once downloaded, start the installer file.
3. The next screen will ask you to accept the license. Click Next.
4. Provide the path for the Git installation; you can leave the default path as-is if you like and click Next.

5. The next screen is where you select how you would like to use Git...

To configure and set up SSH keys for your GitHub account, follow these steps:

1. Check whether you already have an ssh key pair.
2. Open Git Bash and enter ls -al ~/.ssh to see whether existing SSH keys are present:

$ ls -al ~/.ssh  

3. The public key consists of the .pub extension. Create a new key pair (skip this step if you already have a key pair).
4. Open Git Bash and paste in the following text, substituting your GitHub email address for the one shown:

$ ssh-keygen -t rsa -b 4096 -C [email protected]  

5. When you're prompted to Enter a file in which to save the key, press the Enter button to accept the default file location mentioned:

6. When prompted, type a secure passphrase (recommended), or press Enter to continue without a passphrase:

7. The entire setup will look as shown in the following screenshot:

8. Add the newly created SSH keys into ssh...

In this chapter, we learned about different version control systems and source code management in detail. We also delved into using Git to create a repository and manage teams and organizations. In the next chapter, you'll be introduced to cross-platform application development using Xamarin and using Visual Studio for development.