querying-yaml
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Chineseyq: YAML Query and Extraction Tool
yq:YAML查询与提取工具
Always invoke yq skill to extract YAML fields - do not execute bash commands directly.
Use yq to extract specific fields from YAML files without reading entire file contents, saving 80-95% context usage.
提取YAML字段时请始终调用yq技能——不要直接执行bash命令。
使用yq从YAML文件中提取特定字段,无需读取整个文件内容,可节省80-95%的上下文占用。
When to Use yq
何时使用yq
Use yq when:
- Need specific field(s) from structured YAML file
- File is large (>50 lines) and only need subset of data
- Querying nested structures in YAML
- Filtering/transforming YAML data
- Working with docker-compose.yml, GitHub Actions workflows, K8s configs
Just use Read when:
- File is small (<50 lines)
- Need to understand overall structure
- Making edits (need full context anyway)
在以下场景使用yq:
- 需要从结构化YAML文件中获取特定字段
- 文件较大(超过50行)且仅需部分数据
- 查询YAML中的嵌套结构
- 过滤/转换YAML数据
- 处理docker-compose.yml、GitHub Actions工作流、K8s配置文件
在以下场景使用读取功能即可:
- 文件较小(少于50行)
- 需要了解文件整体结构
- 需要进行编辑(无论如何都需要完整上下文)
Tool Selection
工具选择
JSON files → Use
jq- Common: package.json, tsconfig.json, lock files, API responses
YAML files → Use
yq- Common: docker-compose.yml, GitHub Actions, CI/CD configs
Both tools extract exactly what you need in one command - massive context savings.
JSON文件 → 使用
jq- 常见场景:package.json、tsconfig.json、锁文件、API响应
YAML文件 → 使用
yq- 常见场景:docker-compose.yml、GitHub Actions、CI/CD配置文件
这两款工具都能通过一条命令精准提取你需要的数据,大幅节省上下文占用。
Default Strategy
默认策略
Invoke yq skill for extracting specific fields from YAML files efficiently. Use instead of reading entire files to save 80-95% context.
Common workflow: fd skill → yq skill → other skills (fzf, sd, bat) for extraction and transformation.
调用yq技能可高效提取YAML文件中的特定字段。无需读取整个文件,可节省80-95%的上下文占用。
常见工作流:fd技能 → yq技能 → 其他技能(fzf、sd、bat)进行提取与转换。
Pipeline Combinations
流水线组合
- yq | fzf: Interactive selection from YAML data
- yq | sd: Transform YAML to other formats
- yq | bat: View extracted YAML with syntax highlighting
- yq | fzf: 从YAML数据中进行交互式选择
- yq | sd: 将YAML转换为其他格式
- yq | bat: 查看带语法高亮的提取后YAML内容
Skill Combinations
技能组合
For Discovery Phase
发现阶段
- fd → yq: Find YAML config files and extract specific fields
- ripgrep → yq: Find YAML usage patterns and extract values
- extracting-code-structure → yq: Understand API structures before extraction
- fd → yq: 查找YAML配置文件并提取特定字段
- ripgrep → yq: 查找YAML使用模式并提取值
- extracting-code-structure → yq: 提取前先了解API结构
For Analysis Phase
分析阶段
- yq → fzf: Interactive selection from structured data
- yq → bat: View extracted data with syntax highlighting
- yq → tokei: Extract statistics from YAML output
- yq → fzf: 从结构化数据中进行交互式选择
- yq → bat: 查看带语法高亮的提取后数据
- yq → tokei: 从YAML输出中提取统计数据
For Refactoring Phase
重构阶段
- yq → sd: Transform YAML data to other formats
- yq → jq: Convert YAML to JSON for different tools
- yq → xargs: Use extracted values as command arguments
- yq → sd: 将YAML数据转换为其他格式
- yq → jq: 将YAML转换为JSON以适配其他工具
- yq → xargs: 将提取的值用作命令参数
Multi-Skill Workflows
多技能工作流
- yq → jq → sd → bat: YAML to JSON transformation with preview
- yq → fzf → xargs: Interactive selection and execution based on YAML data
- fd → yq → ripgrep: Find config files, extract values, search usage
- docker-compose workflow: yq → fzf → nc (extract ports, test connectivity)
- yq → jq → sd → bat: YAML转JSON并预览
- yq → fzf → xargs: 基于YAML数据进行交互式选择与执行
- fd → yq → ripgrep: 查找配置文件、提取值、搜索使用场景
- docker-compose工作流: yq → fzf → nc(提取端口、测试连通性)
Common Integration Examples
常见集成示例
bash
undefinedbash
undefinedGet service ports and test connectivity
获取服务端口并测试连通性
yq '.services.*.ports' docker-compose.yml | sd - '[^0-9]' '' | fzf | xargs -I {} nc -zv localhost {}
yq '.services.*.ports' docker-compose.yml | sd - '[^0-9]' '' | fzf | xargs -I {} nc -zv localhost {}
Extract and filter environment variables
提取并过滤环境变量
yq '.services..environment' docker-compose.yml | sd '\s-\s*' '' | fzf
undefinedyq '.services..environment' docker-compose.yml | sd '\s-\s*' '' | fzf
undefinedNote: Choosing Between jq and yq
注意:jq与yq的选择
- JSON files (package.json, tsconfig.json): Use
jq - YAML files (docker-compose.yml, GitHub Actions): Use
yq
- JSON文件(package.json、tsconfig.json):使用
jq - YAML文件(docker-compose.yml、GitHub Actions):使用
yq
Quick Examples
快速示例
bash
undefinedbash
undefinedGet service ports from docker-compose
从docker-compose中获取服务端口
yq '.services.*.ports' docker-compose.yml
yq '.services.*.ports' docker-compose.yml
Get specific service configuration
获取特定服务的配置
yq '.services.web.image' docker-compose.yml
yq '.services.web.image' docker-compose.yml
List all service names
列出所有服务名称
yq '.services | keys[]' docker-compose.yml
undefinedyq '.services | keys[]' docker-compose.yml
undefinedDetailed Reference
详细参考
For comprehensive yq patterns, syntax, and examples, load yq guide when needing:
- Complex YAML structure navigation
- Array manipulation and filtering
- Data transformation patterns
- Docker Compose and Kubernetes examples
- Integration with other tools
- Core patterns (80% of use cases)
- Real-world workflows (Docker Compose, GitHub Actions, Kubernetes)
- Advanced patterns and edge case handling
- Output formats and pipe composition
- Best practices and integration with other tools
如需了解全面的yq模式、语法及示例,在以下场景可加载yq指南:
- 复杂YAML结构导航
- 数组操作与过滤
- 数据转换模式
- Docker Compose与Kubernetes示例
- 与其他工具的集成
- 核心模式(覆盖80%的使用场景)
- 真实工作流(Docker Compose、GitHub Actions、Kubernetes)
- 高级模式与边缘情况处理
- 输出格式与管道组合
- 最佳实践与其他工具的集成