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Cross-Platform NET Development Made Easy: A Beginner’s Guide to Installing Mono on Ubuntu 2004

Mono is a free and open-source implementation of Microsoft’s .NET platform. It is mainly used for cross-platform development and allows developers to write code in C# and other .NET languages on Windows, macOS, and Linux.

This article provides a step-by-step guide on how to install Mono on Ubuntu 20.04 and how to get started with it. Installing Mono on Ubuntu 20.04

Before we begin, ensure that you have sudo privileges on your system.

The first step is to add the Mono repository to your system’s package manager. This enables you to download and install Mono along with its dependencies.

To add the Mono repository, open the Terminal and execute the following commands:

“`

sudo apt update

sudo apt install apt-transport-https dirmngr gnupg ca-certificates

“`

Once the required packages are installed, fetch the GPG key from the Mono project’s website and add it to your system’s trusted keyring. “`

sudo apt-key adv –keyserver hkp://keyserver.ubuntu.com:80 –recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF

“`

Now, add the Mono repository to your system’s package sources.

“`

echo “deb https://download.mono-project.com/repo/ubuntu stable-focal main” | sudo tee /etc/apt/sources.list.d/mono-official-stable.list

“`

Once the repository is added, update the package manager and install Mono-complete, which includes everything you need to start building and running .NET applications. “`

sudo apt update

sudo apt install mono-complete

“`

That’s it! You have successfully installed Mono on your Ubuntu 20.04 system.

Verifying Installation

To verify that Mono is installed correctly, execute the following command in the Terminal:

“`

mono –version

“`

This should give you the version of Mono that’s installed on your system.

Getting Started with Mono

Now that you have Mono installed, let’s build a simple “Hello World!” program in C#. Open your favorite text editor and create a new file called “hello.cs”.

Add the following code to it:

“`

using System;

class MainClass {

public static void Main (string[] args) {

Console.WriteLine (“Hello World!”);

}

}

“`

Save the file and then compile it using the csc compiler, which is included in Mono-complete. “`

csc hello.cs

“`

This will generate an executable file called “hello.exe”.

To run the program, execute the following command in the Terminal. “`

mono hello.exe

“`

The output should be “Hello World!”.

Conclusion

Installing Mono on Ubuntu 20.04 is a straightforward process and should only take a few minutes. With Mono, you can write .NET applications in C# and other .NET languages on Linux, macOS, and Windows.

With this guide, you should now be able to install Mono and get started with building your first program. Happy coding!

In summary, this article provides a guide on how to install Mono on Ubuntu 20.04 and start developing .NET applications.

By following the step-by-step instructions provided, users can easily add the Mono repository, download and install Mono-complete, and verify the installation. The article also walks through how to build a “Hello World!” program and run it on the Terminal.

With Mono, developers can write cross-platform .NET applications in C# and other languages on Windows, macOS, and Linux. The article’s main takeaway is that Mono is a valuable tool for building cross-platform applications and that its installation and setup are easy and straightforward.

Happy coding!

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