how to install npm in ubuntu24.04?

Install Latest Node.js + npm (recommended)

Ubuntu's repo versions can be old. Use NodeSource to get the latest LTS.

1️⃣ Install prerequisites

    sudo apt update
    sudo apt install -y ca-certificates curl gnupg

2️⃣ Add NodeSource repo (example: Node 20 LTS)

curl -fsSL https://deb.nodesource.com/setup_20.x | sudo -E bash -

3️⃣ Install Node.js (includes npm)

sudo apt install -y nodejs

Verify:

node -v
npm -v