# Validate ## Description This command allows you validate files. It will not modify the source data in any way. {% hint style="info" %} Available since `v1.25.0.` {% endhint %} ## Usage ```shell dasel validate a.json b.yaml files/*.json ``` ### Flags | `--include-error` |

Tells dasel to output to include/exclude the error when a file fails validation.

Default to true.

| | ----------------- | ---------------------------------------------------------------------------------------------------------------------------- | ## Example ### Validate an entire directory ```shell $ dasel validate tests/assets/* fail tests/assets/broken.json could not load input: could not unmarshal data: invalid character '}' after array element fail tests/assets/broken.xml could not load input: could not unmarshal data: xml.Decoder.Token() - XML syntax error on line 1: element closed by pass tests/assets/deployment.yaml pass tests/assets/example.json pass tests/assets/example.xml pass tests/assets/example.yaml Error: 2 files failed validation ``` ### Validate a subset of files ```shell $ dasel validate tests/assets/example.* pass tests/assets/example.json pass tests/assets/example.xml pass tests/assets/example.yaml ``` ### Validate specific files ```shell $ dasel validate tests/assets/example.json tests/assets/example.yaml pass tests/assets/example.json pass tests/assets/example.yaml ``` ## Pre-Commit Add `dasel` hooks to `.pre-commit-config.yaml` file ```yaml - repo: https://github.com/TomWright/dasel rev: v1.25.1 hooks: - id: dasel-validate ``` for a native execution of dasel, or use: * `dasel-validate-docker` pre-commit hook for executing dasel using the official [Docker images](https://daseldocs.tomwright.me/installation#docker) * `dasel-validate-bin` pre-commit hook for executing dasel using the official [binary](https://github.com/TomWright/dasel-docs/blob/master/usage/installation/README.md) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://daseldocs.tomwright.me/v1/usage/validate.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.