# Install cek with Homebrew

Explore the (overlay) filesystem and layers of OCI container images. Version 0.2.0 via Homebrew; verified 2026-07-27.

## Install

```sh
sudo av install brew:cek
```

Additional install commands:

### macOS

- Homebrew (100%):

```sh
brew install cek
```

  Evidence: local Homebrew formula metadata

## Package facts

- **Package key:** brew:cek
- **Package manager:** Homebrew
- **Version:** 0.2.0
- **Source summary:** Explore the (overlay) filesystem and layers of OCI container images
- **Homepage:** <https://github.com/bschaatsbergen/cek>
- **Repository:** <https://github.com/bschaatsbergen/cek>
- **Last updated:** 2026-07-27T19:20:57+02:00
- **Generated:** 2026-08-03T19:37:03+00:00

## Executables

- cek (alias)

## Install behavior

- Bottle: not available

## Freshness

- Page generated: 2026-08-03
- Package-manager version: 0.2.0
## Project history and usage

cek, the container exploration kit, is a Go CLI for inspecting OCI container image filesystems and layers without running containers.

### Project history

The official repository was created on December 27, 2025. The README positions cek as a command-line utility for browsing files, reading contents, inspecting layer mechanics, listing tags, exporting images, and showing image metadata.

### Adoption history

The project is young but has a clear package-manager path through Homebrew and Go installation. The official repository metadata showed more than 300 stars and its first listed GitHub release, v0.2.0, was published on May 16, 2026.

### How it is used

Users run commands such as `cek ls`, `cek cat`, `cek tags`, `cek export`, `cek tree`, and `cek inspect` against OCI image references. The tool can use local container daemon sockets through `DOCKER_HOST` or pull from remote registries.

### Why package nerds care

cek is useful to package and container maintainers because it inspects image contents, layers, tags, and metadata without launching a container, which fits CI, registry triage, air-gapped transfer, and image-diff workflows.

### Timeline

- 2025: The official GitHub repository was created.
- 2026: v0.2.0 was published on GitHub Releases.
- 2026: The official repository metadata recorded active development into July.

### Related projects

- Docker, Podman, and containerd are supported local daemon sources named in the README.
- OCI image registries are the remote source for image pulls and tag listing.

### Sources

- <https://api.github.com/repos/bschaatsbergen/cek>
- <https://api.github.com/repos/bschaatsbergen/cek/releases>
- <https://github.com/bschaatsbergen/cek#readme>


## Security Notes

infrastructure mutation or orchestration signal.

- **Geiger risk:** orange / medium
- infrastructure mutation or orchestration signal


## Combined YAML source

View the package source record on GitHub. [combined/cek.yml](https://github.com/mxcl/pkgdb/blob/main/combined/cek.yml)


## Sources

- pkg.so package database
- Geiger risk classifier
- curated package history
- pkgdb category and tag curation
- cross-ecosystem install command graph