Deno 2 is a secure runtime for JavaScript and TypeScript built on V8 and Rust. Unlike Node.js, Deno has built-in TypeScript support, a permission-based security model, and a standard library without npm being required. Deno 2 introduces npm compatibility and improved backwards compatibility. This guide installs Deno 2 on Ubuntu 26.04 LTS.

Tested and valid on:

Ubuntu 26.04 LTS

Prerequisites

Ubuntu 26.04 LTS
A user account with internet access

Step 1 – Install Deno Using the Official Installer

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

Step 2 – Add Deno to PATH

The installer outputs the path instructions. Add to your ~/.bashrc:

export DENO_INSTALL="$HOME/.deno"
export PATH="$DENO_INSTALL/bin:$PATH"

source ~/.bashrc

Step 3 – Verify Installation

deno --version

Step 4 – Run a TypeScript File

cat > hello.ts << 'EOF'
const msg: string = 'Hello from Deno 2!';
console.log(msg);
EOF
deno run hello.ts

Step 5 – Use Deno with Network Permissions

cat > server.ts < new Response('Hello Deno!'));
console.log('Listening on http://localhost:8000');
EOF
deno run --allow-net server.ts

Step 6 – Use npm Packages with Deno

deno run --allow-net npm:express

Step 7 – Update Deno

deno upgrade

Conclusion

Deno 2 is installed on Ubuntu 26.04 LTS. Explore its standard library at deno.land/std and benefit from built-in security, TypeScript, and native Web API support.

How to Install Deno 2 on Ubuntu 26.04