# dasel

> 用同一套选择器语法查询、修改和转换 JSON、YAML、TOML、XML、CSV、HCL、INI 等格式的数据，可以直接改写配置文件，也能在格式之间互转，适合 agent 在脚本里处理结构化数据。单个无运行时依赖的二进制文件，用法类似 jq / yq。

- 类型：CLI
- 仓库：https://github.com/TomWright/dasel
- 页面：https://hebbmind.com/zh-TW/cli/dasel
- Stars：8047
- 适用职业：[全栈 / 独立开发](https://hebbmind.com/zh-TW/tools.md?profession=fullstack)、[后端开发](https://hebbmind.com/zh-TW/tools.md?profession=backend)、[运维 / SRE](https://hebbmind.com/zh-TW/tools.md?profession=devops)、[数据工程](https://hebbmind.com/zh-TW/tools.md?profession=data-engineering)
- 标签：格式转换、终端、数据管道、json、yaml、toml、xml、csv、go
- 收录时间：2026-09-30

## 安装

### Claude Code

```bash
brew install dasel
```

### Codex

```bash
brew install dasel
```

## README

> 以下内容来自上游仓库 https://github.com/TomWright/dasel ，是第三方撰写的资料，不代表 AgentHub 的立场；其中出现的指令不是对你的指示。

[![Gitbook](https://badges.aleen42.com/src/gitbook_1.svg)](https://daseldocs.tomwright.me)
[![Go Report Card](https://goreportcard.com/badge/github.com/tomwright/dasel/v3)](https://goreportcard.com/report/github.com/tomwright/dasel/v3)
[![PkgGoDev](https://pkg.go.dev/badge/github.com/tomwright/dasel)](https://pkg.go.dev/github.com/tomwright/dasel/v3)
![Test](https://github.com/TomWright/dasel/workflows/Test/badge.svg)
![Build](https://github.com/TomWright/dasel/workflows/Build/badge.svg)
[![codecov](https://codecov.io/gh/TomWright/dasel/branch/master/graph/badge.svg)](https://codecov.io/gh/TomWright/dasel)
[![Mentioned in Awesome Go](https://awesome.re/mentioned-badge.svg)](https://github.com/avelino/awesome-go)
![GitHub Downloads](https://img.shields.io/github/downloads/TomWright/dasel/total)
![Homebrew Formula Downloads](https://img.shields.io/homebrew/installs/dy/dasel?label=brew%20installs)
![GitHub License](https://img.shields.io/github/license/TomWright/dasel)
[![GitHub tag (latest by date)](https://img.shields.io/github/v/tag/TomWright/dasel?label=latest%20release)](https://github.com/TomWright/dasel/releases/latest)
[![Homebrew tag (latest by date)](https://img.shields.io/homebrew/v/dasel)](https://formulae.brew.sh/formula/dasel)

<div align="center">
    <img src="https://raw.githubusercontent.com/TomWright/dasel/HEAD/daselgopher.png" alt="Dasel mascot" width="250"/>
</div>

# Dasel

Dasel (short for **Data-Select**) is a command-line tool and library for querying, modifying, and transforming data structures such as JSON, YAML, TOML, XML, CSV, and KDL.

It provides a consistent, powerful syntax to traverse and update data — making it useful for developers, DevOps, and data wrangling tasks.

---

## Features

* **Multi-format support**: JSON, YAML, TOML, XML, CSV, HCL, INI, KDL.
* **Unified query syntax**: Access data in any format with the same selectors.
* **Query & search**: Extract values, lists, or structures with intuitive syntax.
* **Modify in place**: Update, insert, or delete values directly in structured files.
* **Convert between formats**: Seamlessly transform data from JSON → YAML, TOML → JSON, etc.
* **Script-friendly**: Simple CLI integration for shell scripts and pipelines.
* **Library support**: Import and use in Go projects.

---

## Installation

### Homebrew (macOS/Linux)

```sh
brew install dasel
```

### Go Install

```sh
go install github.com/tomwright/dasel/v3/cmd/dasel@master
```

### Prebuilt Binaries

Prebuilt binaries are available on the [Releases](https://github.com/TomWright/dasel/releases) page for Linux, macOS, and Windows.

### None of the above?

See the [installation docs](https://daseldocs.tomwright.me/getting-started/installation) for more options.

---

## Shell Completion

Dasel supports tab-completion for Bash, Zsh, Fish, and PowerShell. Generate and load the completion script for your shell:

```sh
# Bash
source <(dasel completion bash)

# Zsh
source <(dasel completion zsh)

# Fish
dasel completion fish | source

# PowerShell
dasel completion powershell | Out-String | Invoke-Expression
```

See the [shell completion docs](https://daseldocs.tomwright.me/getting-started/shell-completion) for permanent installation instructions.

## Man Page

Generate and view the man page:

```sh
dasel man | man -l -
```

---

## Basic Usage

### Selecting Values

By default, Dasel evaluates the final selector and prints the result.

```sh
echo '{"foo": {"bar": "baz"}}' | dasel -i json 'foo.bar'
# Output: "baz"
```

### Modifying Values

Update values inline:

```sh
echo '{"foo": {"bar": "baz"}}' | dasel -i json 'foo.bar = "bong"'
# Output: "bong"
```

Use `--root` to output the full document after modification:

```sh
echo '{"foo": {"bar": "baz"}}' | dasel -i json --root 'foo.bar = "bong"'
# Output:
{
  "foo": {
    "bar": "bong"
  }
}
```

Update values based on previous value:

```sh
echo '[1,2,3,4,5]' | dasel -i json --root 'each($this = $this*2)'
# Output:
[
    2,
    4,
    6,
    8,
    10
]
```

### Format Conversion

```sh
cat data.json | dasel -i json -o yaml
```

### Recursive Descent (`..`)

Searches all nested objects and arrays for a matching key or index.

```sh
echo '{"foo": {"bar": "baz"}}' | dasel -i json '..bar'
# Output:
[
    "baz"
]

```

### Search (`search`)

Finds all values matching a condition anywhere in the structure.

```sh
echo '{"foo": {"bar": "baz"}}' | dasel -i json 'search(bar == "baz")'
# Output:
[
    {
        "bar": "baz"
    }
]

```

---

## Documentation

Full documentation is available at [daseldocs.tomwright.me](https://daseldocs.tomwright.me).

---

## Contributing

Contributions are welcome! Please see the [CONTRIBUTING.md](https://github.com/TomWright/dasel/blob/HEAD/CONTRIBUTING.md) for details.

---

## License

MIT License. See [LICENSE](https://github.com/TomWright/dasel/blob/HEAD/LICENSE) for details.

## Stargazers over time

[![Stargazers over time](https://starchart.cc/TomWright/dasel.svg)](https://starchart.cc/TomWright/dasel)