Miller Csv Tsv Json Data Processor

---
name: "Miller CSV TSV JSON Data Processor"
slug: "miller-csv-tsv-json-data-processor"
description: "Miller (mlr) is a command-line tool for querying, shaping, and reformatting name-indexed data such as CSV, TSV, JSON, and JSON Lines. It combines the functionality of awk, sed, cut, join, and sort into a single tool purpose-built for structured data processing."
github_stars: 9814
verification: "security_reviewed"
source: "https://github.com/johnkerl/miller"
category: "Data Extraction & Transformation"
framework: "Claude Code"
tool_ecosystem:
  github_repo: "johnkerl/miller"
  github_stars: 9814
---

# Miller CSV TSV JSON Data Processor

Miller (mlr) is a command-line tool for querying, shaping, and reformatting name-indexed data such as CSV, TSV, JSON, and JSON Lines. It combines the functionality of awk, sed, cut, join, and sort into a single tool purpose-built for structured data processing.

## Installation

Requirements and caveats from upstream:
- For those operations which require deeper retention (sort, tac, stats1),

Basic usage or getting-started notes:
- [![deepwiki](https://deepwiki.com/badge.svg)](https://deepwiki.com/johnkerl/miller)
- [Miller in 10 minutes](https://miller.readthedocs.io/en/latest/10min)
- [A Guide To Command-Line Data Manipulation](https://www.smashingmagazine.com/2022/12/guide-command-line-data-manipulation-cli-miller)

- Source: https://github.com/johnkerl/miller
- Extracted from upstream docs: https://raw.githubusercontent.com/johnkerl/miller/HEAD/README.md

## Source

- [Agent Skill Exchange](https://agentskillexchange.com/skills/miller-csv-tsv-json-data-processor/)