# Profile and clean large CSV datasets from the terminal with qsv

> Inspect, profile, normalize, and diff large CSV files before loading them into downstream analytics or automation workflows.

- Skill: `agentskillexchange/profile-and-clean-large-csv-datasets-from-the-terminal-with-` (Agent Skill)
- Install (CLI): `npx skillmds@latest add agentskillexchange/profile-and-clean-large-csv-datasets-from-the-terminal-with-`
- Raw SKILL.md: https://api.skillmd.com/api/skills/agentskillexchange/profile-and-clean-large-csv-datasets-from-the-terminal-with-/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Data & Analytics
- Author: agentskillexchange (https://skillmd.com/u/agentskillexchange)
- Updated: 2026-09-08
- Page: https://skillmd.com/skills/agentskillexchange/profile-and-clean-large-csv-datasets-from-the-terminal-with-

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# Profile and clean large CSV datasets from the terminal with qsv

Inspect, profile, normalize, and diff large CSV files before loading them into downstream analytics or automation workflows.

## Prerequisites

qsv binary and CSV datasets

## Installation

Use the upstream install or setup path that matches your environment:
- cargo install zipsign
- brew install qsv
- conda install conda-forge::qsv
- git clone https://github.com/dathere/qsv.git

Requirements and caveats from upstream:
- | [py](docs/help/py.md)✨<br>📇🔣 | Create a new computed column or filter rows by evaluating a Python expression on every row of a CSV file. Python's [f-strings](https://www.freecodecamp.org/news/python-f-strings-tutori...
- 🔣: requires UTF-8 encoded input.

Basic usage or getting-started notes:
- | [describegpt](docs/help/describegpt.md)<br>📇🗃️🤖🌐🪄📚⛩️ ![CKAN](docs/images/ckan.png) | <a name="describegpt_deeplink"></a>Infer a ["neuro-symbolic"](https://en.wikipedia.org/wiki/Neuro-symbolic_AI) Data Dictionary, De...
- | [luau](docs/help/luau.md)✨<br>📇🌐🔣📚 ![CKAN](docs/images/ckan.png) ![Luau](docs/images/luau.png) | <a name="luau_deeplink"></a>Create multiple new computed columns, filter rows, compute aggregations and build complex...
- | [moarstats](docs/help/moarstats.md)<br>📇🏎️ | Add up to an additional 55 statistical measures, including extended outlier, robust & bivariate statistics to an existing stats CSV file. ([example](docs/moarstats/NYC_31...

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

## Documentation

- https://qsv.dathere.com

## Source

- [Agent Skill Exchange](https://agentskillexchange.com/skills/profile-and-clean-large-csv-datasets-from-the-terminal-with-qsv/)