has ☆

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Description:
Checks presence of various command-line tools and their versions on the path

Type: Formula | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: Developer tools

Tags: cli developer-tools version-check devops shell

Install: brew install has

About:
Has is a command-line utility that checks for the presence of specified tools in your system's PATH. It goes beyond simple existence checks by also verifying version requirements, ensuring that the correct versions of dependencies are installed. This helps developers quickly diagnose environment setup issues and confirm that their toolchains are correctly configured.

Key Features:

Checks for the presence of command-line tools
Verifies specific version requirements (e.g., >= 1.0)
Supports multiple package managers (brew, apt, yum, etc.)
Provides clear, actionable output for missing tools
Cross-platform compatibility

Use Cases:

Verifying development environment setup in CI/CD pipelines
Ensuring team members have the correct tool versions installed
Creating portable scripts that depend on specific command-line utilities

Alternatives:

command -v – Built-in shell command that only checks for existence, not versions or installation methods.
which – Similar to command -v, only checks for binary location without version information.

Version History

Detected	Version	Rev	Change	Commit