Dasel

dasel Plugin

Select, put and delete data from JSON, TOML, YAML, XML, INI, HCL and CSV files with a single tool. A query and update tool for structured data files.

Commands

Data Operations

• dasel data select — Select data from structured files
• dasel data put — Put data into structured files

Utility

• dasel _ _ — Passthrough to dasel CLI

Usage Examples

• "Select value from YAML"
• "Update JSON file"
• "Convert TOML to JSON"
• "Query XML file"

Installation

brew install dasel

Or via Go:

go install github.com/TomWright/dasel/cmd/dasel@latest

Examples

# Select value from JSON
dasel data select '.name' -p json -f data.json

# Select nested value
dasel data select '.user.name' -p json -f data.json

# Select array element
dasel data select '.items[0]' -p json -f data.json

# Put value into file
dasel data put '.name' 'new value' -p json -f data.json

# Put with type
dasel data put '.count' '42' -t int -p json -f data.json

# Convert YAML to JSON
dasel data select '.' -p yaml -f data.yaml -w json

# Convert TOML to YAML
dasel data select '.' -p toml -f data.toml -w yaml

# Any dasel command with passthrough
dasel _ _ '.name' -p json -f data.json
dasel _ put '.version' '1.0.0' -p toml -f data.toml

Key Features

• Multiple formats - JSON, TOML, YAML, XML, INI, HCL, CSV
• Format conversion - Convert between any supported formats
• Query - Select data with simple selectors
• Update - Put data into files
• Delete - Remove data from files
• Type support - String, int, bool types
• Nested queries - Access deeply nested data
• Array access - Select array elements
• Cross-platform - Linux, macOS, Windows
• Simple syntax - Easy to learn selector language

Notes

• Selector syntax uses dot notation
• Can convert between formats
• In-place file editing
• Perfect for config file management
• Works with CI/CD pipelines