The Mono project is sponsored by the Microsoft. It is an open source, cross platform implementation of Microsoft .NET Framework. Mono supports most the modern operating systems with 32-bit and 64-bit architecture. This tutorial helps you with step by step to install Mono on Debian 10 and Debian 9 systems.
SSH or Shell access to Debian system with sudo privileged account.
Install Mono on Debian
First of all, install some required packages on your Debian system and import GPG key.
sudo apt install gnupg ca-certificates sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys D3D831EF
Now, add Apt repository on your system provide by the official website. Use one of the following commands to add Mono repository to your system based on Ubuntu version.
### Debian 10 (Buster) echo "deb https://download.mono-project.com/repo/debian stable-buster main" | sudo \ tee /etc/apt/sources.list.d/mono-stable.list ### Debian 9 (Xenial) echo "deb https://download.mono-project.com/repo/debian stable-xenial main" | sudo \ tee /etc/apt/sources.list.d/mono-stable.list
Once the repository is added. Update the apt cache and install Mono packages on your Ubuntu system.
sudo apt update sudo apt install mono-complete mono-devel
The mono-devel package is used to compile code. The mono-complete package is used to install everything on the system.
Find Mono Version
Once the installation has finished on your system. Let’s check the installed Mono version using the following command.
Mono JIT compiler version 188.8.131.52 (tarball Tue Feb 4 21:20:20 UTC 2020) Copyright (C) 2002-2014 Novell, Inc, Xamarin Inc and Contributors. www.mono-project.com TLS: __thread SIGSEGV: altstack Notifications: epoll Architecture: amd64 Disabled: none Misc: softdebug Interpreter: yes LLVM: yes(610) Suspend: hybrid GC: sgen (concurrent by default)
Run C# Example with Mono
As you have installed Mono on your Ubuntu system. Create a sample c# program to run with Mono. Create a Welcome.cs file and edit in your favorite text editor.
Add below value to file.
public class Welcome
public static void Main(string args)
Console.WriteLine ("Welcome to TecAdmin.net");
Save file and close it. Then compile the c# program with the c# compiler using below command.
Once compilation is completed successfully, it will create a exe file in the local directory with the same name as script. In this case a Welcome.exe file is generated in my local directory.
Then, set the execute permission on newly created executable file. After than run the program as below commands.
chmod +x Welcome.exe ./Welcome.exe
See the results on screen:
All done, You have successfully installed Mono on your Debian system. Next you may required to install Visual Studio Code on Debian Linux system.