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Snyk CLI scans and monitors your projects for security vulnerabilities.

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Quick Overview

Snyk CLI is a command-line interface tool for the Snyk security platform. It allows developers to find and fix vulnerabilities in their project dependencies, container images, and Infrastructure as Code (IaC) configurations directly from their local environment or CI/CD pipelines.

Pros

  • Easy integration with various development workflows and CI/CD tools
  • Supports multiple programming languages and package managers
  • Provides actionable remediation advice for identified vulnerabilities
  • Offers both free and paid plans with different feature sets

Cons

  • Some advanced features require a paid subscription
  • Can produce false positives in certain scenarios
  • May slow down CI/CD pipelines if not configured optimally
  • Learning curve for effectively using all features and interpreting results

Getting Started

To get started with Snyk CLI:

  1. Install Snyk CLI:

    npm install -g snyk

  2. Authenticate with Snyk:

    snyk auth

  3. Test your project for vulnerabilities:

    cd /path/to/your/project
snyk test

  4. Monitor your project continuously:

    snyk monitor

For more detailed instructions and advanced usage, refer to the official Snyk CLI documentation.

Competitor Comparisons

dependabot logo

dependabot-core

4,671

🤖 Dependabot's core logic for creating update PRs.

Pros of Dependabot-core

  • Integrated directly into GitHub, providing seamless dependency updates
  • Supports a wider range of programming languages and package managers
  • Offers more granular control over update strategies and scheduling

Cons of Dependabot-core

  • Limited to GitHub ecosystem, not suitable for self-hosted or other Git platforms
  • Less comprehensive security scanning compared to Snyk CLI
  • Requires more setup and configuration for advanced use cases

Code Comparison

Dependabot-core (Ruby):

def create_pull_request(dependencies:, files:, credentials:)
  # Create a new branch for the dependency update
  branch_name = Utils::BranchNamer.new(
    dependencies: dependencies,
    files: files
  ).new_branch_name

  # Create a pull request with the updated dependencies
  create_pull_request_with_languages(
    dependencies: dependencies,
    files: files,
    credentials: credentials,
    branch_name: branch_name
  )
end

Snyk CLI (JavaScript):

async function testDependencies(path, options) {
  const packageManager = detectPackageManager(path);
  const results = await snyk.test(path, {
    ...options,
    packageManager,
  });
  return processResults(results);
}

The code snippets demonstrate different approaches: Dependabot-core focuses on creating pull requests for dependency updates, while Snyk CLI emphasizes testing dependencies for vulnerabilities.

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renovate

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Home of the Renovate CLI: Cross-platform Dependency Automation by Mend.io

Pros of Renovate

  • Broader scope: Handles dependency updates across multiple ecosystems and package managers
  • More customizable: Offers extensive configuration options for fine-tuning update behavior
  • Proactive approach: Automatically creates pull requests for dependency updates

Cons of Renovate

  • Steeper learning curve: More complex setup and configuration process
  • Resource-intensive: Can generate numerous pull requests, potentially overwhelming maintainers
  • Limited security focus: Primarily focused on dependency updates rather than comprehensive security scanning

Code Comparison

Renovate configuration example:

{
  "extends": ["config:base"],
  "packageRules": [
    {
      "updateTypes": ["minor", "patch"],
      "automerge": true
    }
  ]
}

Snyk CLI usage example:

snyk test
snyk monitor

While Renovate focuses on automating dependency updates with extensive configuration options, Snyk CLI provides a more straightforward approach to security scanning and monitoring. Renovate's code typically involves JSON configuration files, whereas Snyk CLI is primarily used through command-line instructions. Both tools serve different primary purposes: Renovate for keeping dependencies up-to-date, and Snyk for identifying and addressing security vulnerabilities in dependencies.

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  • Faster scanning speed, especially for large container images
  • Open-source and free to use without limitations
  • Simpler setup and configuration process

Cons of Grype

  • Less comprehensive vulnerability database compared to Snyk
  • Fewer integrations with CI/CD tools and platforms
  • Limited remediation guidance and fix suggestions

Code Comparison

Grype CLI command:

grype <image_name>

Snyk CLI command:

snyk container test <image_name>

Both tools offer similar basic functionality for scanning container images, but Snyk provides more extensive options for customization and integration with its platform.

Summary

Grype is a lightweight, fast, and open-source vulnerability scanner focused primarily on container images and filesystems. It excels in speed and simplicity but may lack some advanced features and integrations offered by Snyk.

Snyk CLI, on the other hand, is part of a larger ecosystem with a more comprehensive vulnerability database and additional security features. It provides better integration options and more detailed remediation guidance but may be slower for large scans and requires a paid subscription for full functionality.

Choose Grype for quick, free, and straightforward vulnerability scanning, especially in resource-constrained environments. Opt for Snyk if you need a more comprehensive security solution with broader language support, extensive integrations, and detailed fix recommendations.

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Pros of Trivy

  • Open-source and free to use, with no limitations on scans or features
  • Supports a wide range of scanning targets, including containers, filesystems, and git repositories
  • Fast scanning speed and low resource consumption

Cons of Trivy

  • Limited integration options compared to Snyk's extensive ecosystem
  • Less comprehensive vulnerability database, especially for language-specific package ecosystems
  • Fewer advanced features for policy management and custom rules

Code Comparison

Trivy CLI usage:

trivy image alpine:3.10

Snyk CLI usage:

snyk container test alpine:3.10

Both tools offer similar command-line interfaces for scanning container images, but Snyk provides more options for authentication and customization.

Key Differences

  • Trivy is primarily focused on container and infrastructure scanning, while Snyk offers broader language and ecosystem support
  • Snyk provides a more comprehensive SaaS platform with additional features like license compliance and code quality checks
  • Trivy is better suited for local and CI/CD pipeline integration, while Snyk excels in enterprise environments with its management and reporting capabilities

Overall, Trivy is an excellent choice for developers and small teams looking for a free, lightweight scanning tool, while Snyk offers a more robust solution for larger organizations with complex security needs.

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README

Getting started with the Snyk CLI

Introduction to Snyk and the Snyk CLI

Snyk is a developer-first, cloud-native security tool to scan and monitor your software development projects for security vulnerabilities. Snyk scans multiple content types for security issues:

  • Snyk Open Source: Find and automatically fix open-source vulnerabilities
  • Snyk Code: Find and fix vulnerabilities in your application code in real time
  • Snyk Container: Find and fix vulnerabilities in container images and Kubernetes applications
  • Snyk Infrastructure as Code: Find and fix insecure configurations in Terraform and Kubernetes code

Learn more about what Snyk can do and sign up for a free account.

The Snyk CLI brings the functionality of Snyk into your development workflow. You can run the CLI locally from the command line or in an IDE. You can also run the CLI in your CI/CD pipeline. The following shows an example of Snyk CLI test command output.

Snyk CLI test command output example

Snyk CLI test command output

Snyk CLI scanning supports many languages and tools. For detailed information, see the following:

This page explains how to install, authenticate, and start scanning using the CLI. Snyk also has an onboarding wizard to guide you through these steps. For a demonstration, view Starting with Snyk: an overview of the CLI onboarding flow.

Install the Snyk CLI and authenticate your machine

To use the CLI, you must install it and authenticate your machine. See Install or update the Snyk CLI and Authenticate the CLI with your account. You can refer to the release notes for a summary of changes in each release. Before scanning your code, review the Code execution warning for Snyk CLI.

Note: Before you can use the CLI for Open Source scanning, you must install your package manager. The needed third-party tools, such as Gradle or Maven, must be in the PATH.

You can use the CLI in your IDE or CI/CD environment. For details, see Install as part of a Snyk integration.

Test your installation

After authenticating, you can test your installation. For a quick test, run snyk --help.

Alternatively, you can perform a quick test on a public npm package, for example snyk test ionic.

Look at the test command report in your terminal. The report shows the vulnerabilities Snyk found in the package. For each issue found, Snyk reports the severity of the issue, provides a link to a detailed description, reports the path through which the vulnerable module got into your system, and provides guidance on how to fix the problem.

Scan your development Project

Note: Before using the Snyk CLI to test your Open Source Project for vulnerabilities, with limited exceptions, you must build your Project. For details, see Open Source Projects that must be built before testing.

In addition, depending on the language of your open-source Project, you may need to set up your language environment before using the Snyk CLI. For details, refer to Supported languages, frameworks, and feature availability overview.

After you have installed the CLI and authenticated your machine, to scan an open-source Project, use cd /my/project/ to change the current directory toafolder containing a supported package manifest file, such as package.json, pom.xml, or composer.lock. Then run snyk test. All vulnerabilities identified are listed, including their path and fix guidance.

To scan your source code run snyk code test.

You can scan a Docker image by its tag running, for example: snyk container test ubuntu:18.04.

To scan a Kubernetes (K8s) file run the following:
snyk iac test /path/to/kubernetes_file.yaml

For details about using the Snyk CLI to scan each content type, see the following:

Monitor your Open Source or Container Project

Snyk can monitor your Open Source or Container integrated SCM Project periodically and alert you to new vulnerabilities. To set up your Project to be monitored, run snyk monitor or snyk container monitor.

This creates a snapshot of your current dependencies so Snyk can regularly scan your code. Snyk can then alert you about newly disclosed vulnerabilities as they are introduced or when a previously unavailable patch or upgrade path is created. The following code shows an example of the output of the snyk monitor command.

> snyk monitor
Monitoring /project (project-name)...

Explore this snapshot at
https://app.snyk.io/org/my-org/project/29361c2c-9005-4692
-8df4-88f1c040fa7c/history/e1c994b3-de5d-482b-9281-eab4236c851e

Notifications about newly disclosed issues related to these
dependencies will be emailed to you.

You can log in to your Snyk account and navigate to the Projects page to find the latest snapshot and scan results:

Snyk monitor snapshot and scan results

Snyk monitor snapshot and scan results

For more information, see Monitor your Projects at regular intervals.

Running out of tests

Snyk allows unlimited tests for public repositories. If you are on the Free plan, you have a limited number of tests per month. Paid plans have unlimited tests on private and public repositories. If you are on the Free plan and notice that your test count is quickly being used, even with public repositories, you can remedy this by telling Snyk the public url of the repository that is being scanned by the Snyk CLI. This ensures that Snyk does not count a public repository towards the test limits.

If you run out of tests on an open-source Project, follow these steps:

  • Run snyk monitor.
  • Open the Snyk UI and navigate to the settings of the Project.
  • Enter the URL of your open-source repository in Git remote URL.

Additional information about the Snyk CLI

Run snyk help or see the CLI commands and options summary.

See the course Introduction to the Snyk CLI for a quick video training session.

Snyk also provides a cheat sheet (blog post) and a video tutorial.

In particular, see the information about the following options that you may find useful:

  • --severity-threshold=low|medium|high|critical: Report only vulnerabilities of the specified level or higher.
  • --json: Print results in JSON format.
  • --all-projects: Auto-detect all Projects in the working directory.

For detailed information about the CLI, see the CLI docs.

Getting support for the Snyk CLI

Submit a ticket to Snyk support whenever you need help with the Snyk CLI or Snyk in general. Note that Snyk support does not actively monitor GitHub Issues on any Snyk development project.

Security

For any security issues or concerns, see the SECURITY.md file in the GitHub repository.

Snyk CLI is closed to contributions

Effective July 22, 2024, Snyk CLI will no longer accept external contributions.

Due to the CLI's extensive usage and intricate nature, even minor modifications can have unforeseen consequences. Since introducing release channels to our code in April 2024, our focus has been on stabilizing releases. We believe this open-source, closed-contribution model best serves this goal.

In the spirit of transparency to Snyk customers and CLI users, we will continue to working in public. However, going forward, we are closed to contributions.

We appreciate and extend our gratitude to the Snyk community.

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