---
title: "duf Modern Disk Usage and Free Utility"
description: "duf is a modern disk usage/free utility written in Go that provides a polished, colorful terminal output for mounted filesystems. It replaces the traditional df command with better formatting, JSON output support, and smart filtering by filesystem type."
verification: "security_reviewed"
source: "https://github.com/muesli/duf"
category:
  - "Developer Tools"
framework:
  - "Custom Agents"
tool_ecosystem:
  github_repo: "muesli/duf"
  github_stars: 14916
---

# duf Modern Disk Usage and Free Utility

duf is a modern disk usage/free utility written in Go that provides a polished, colorful terminal output for mounted filesystems. It replaces the traditional df command with better formatting, JSON output support, and smart filtering by filesystem type.

## Installation

Choose whichever fits your setup:

1. Copy this skill folder into your local skills directory.
2. Clone the repo and symlink or copy the skill into your agent workspace.
3. Add the repo as a git submodule if you manage shared skills centrally.
4. Install it through your internal provisioning or packaging workflow.
5. Download the folder directly from GitHub and place it in your skills collection.

## Source

- [Agent Skill Exchange](https://agentskillexchange.com/skills/duf-modern-disk-usage-free-utility/)