bootc-container-inspect - Man Page

bootc container inspect

Output JSON to stdout containing the container image metadata.

The command outputs a JSON object with the following fields:

• kargs: An array of kernel arguments embedded in the container image.

• kernel: An object containing kernel information (or null if no kernel is found):

  • version: The kernel version identifier. For vmlinuz kernels, this is derived from the /usr/lib/modules/<version> directory name (equivalent to uname -r). For UKI images, this is the UKI filename without the .efi extension - which should usually be the same as the uname.
  • unified: A boolean indicating whether the kernel is packaged as a UKI (Unified Kernel Image).

--rootfs=ROOTFS

Operate on the provided rootfs

Default: /

--json

Output in JSON format

--format=FORMAT

The output format

Possible values:
- humanreadable
- yaml
- json

Inspect container image metadata:

bootc container inspect

Example output (vmlinuz kernel):

{
  "kargs": [
    "console=ttyS0",
    "quiet"
  ],
  "kernel": {
    "version": "6.12.0-0.rc6.51.fc42.x86_64",
    "unified": false
  }
}

Example output (UKI):

{
  "kargs": [],
  "kernel": {
    "version": "7e11ac46e3e022053e7226a20104ac656bf72d1a",
    "unified": true
  }
}

bootc(8)

v1.12.1