Deno is a secure runtime for JavaScript and TypeScript that uses V8 and is built in Rust. It is designed for simplicity and supports modern JavaScript features. In this guide, we will walk through the steps to install Deno on Ubuntu 20.04.

Step 1: Update Your System

Start by ensuring your system is up to date:

sudo apt update && sudo apt upgrade -y

Step 2: Install Deno

The easiest way to install Deno is by using the following command:

curl -fsSL https://deno.land/x/install/install.sh | sh

This script will download and install Deno.

Step 3: Update Your PATH

After installation, you may need to update your PATH environment variable. Add the following line to your ~/.profile or ~/.bashrc file:

export DENO_INSTALL="/home/your_user/.deno"
export PATH="$DENO_INSTALL/bin:$PATH"

Replace your_user with your actual username. Then, apply the changes:

source ~/.profile

Step 4: Verify Deno Installation

Check if Deno is installed correctly by checking its version:

deno --version

Step 5: Create a Simple Deno Application

To test your installation, create a simple Deno application:

echo 'console.log("Hello, Deno!")' > hello.ts

Run the application using:

deno run hello.ts

Conclusion

You have successfully installed Deno on Ubuntu 20.04. This JavaScript runtime will help you build modern applications easily.

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