1. System

Before anything else, update Ubuntu and install the base dependencies that various tools require.

sudo apt update && sudo apt upgrade -y

sudo apt install -y build-essential curl wget unzip git jq ripgrep iproute2 net-tools

Why does this matter?

• build-essential — C/C++ compilers needed to install native packages (Node, Python)
• curl / wget — all official installers use one of these
• git — Claude Code relies heavily on Git to navigate, commit, and create PRs
• jq — command-line JSON processor, recommended by the official docs for parsing programmatic mode output (claude -p), and used in hooks and plugins
• ripgrep — fast file search (rg), used internally by Claude Code to search through source code
• iproute2 — provides the ss command to check ports and network connections
• net-tools — provides the netstat command (classic alternative to ss)

Passwordless Sudo — Autonomy for Claude Code

Claude Code frequently needs sudo to install tools, configure packages, and adjust the system. Without the configuration below, it gets stuck waiting for the password or you need to manually approve each command — breaking the autonomous workflow.

echo "mh ALL=(ALL:ALL) NOPASSWD: ALL" | sudo tee /etc/sudoers.d/usuario-linux

What each part does:

• mh — your Linux username
• ALL=(ALL:ALL) — can execute any command as any user
• NOPASSWD: ALL — without prompting for a password
• /etc/sudoers.d/ — directory for auxiliary sudoers configs (safer than editing /etc/sudoers directly)