How to determine if the current Ubuntu installation is minimal?

I just want to determine whether my installed Ubuntu system is a minimal system or not. Is there any command thay can do this?

I use an image from google cloud. Seems there is no dir called /var/log/installer.

• This answer is relevant only to a subset of systems installed via .isos for Desktops. It does not apply to servers.

• It applies to Ubuntu and to those flavors that provide their users a "minimal" installation from the full .iso. Covered are Ubuntu itself, Kubuntu, Ubuntu Mate, and any other official flavor offering the minimal install option.

• Further, the minimal install option was first made available in 18.04. So this answer is not for versions older than 18.04.

The file to look at is /var/log/installer/telemetry:

See the relevant bits in bold: "Minimal": false, or "Minimal": true,.

For my Kubuntu 18.04, which is a "full" install:

{"Media": "Kubuntu 18.04 LTS \"Bionic Beaver\" - Release amd64 (20180426)",
 "Type": "KDE",
 "PartitionMethod": "manual",
 "DownloadUpdates": false,
 "Language": "en",
 "Minimal": false,
 "RestrictedAddons": true,
 "Stages": ...}

For an 18.04 install with the minimal option:

{"Media": "Ubuntu 18.04.1 LTS \"Bionic Beaver\" - Release amd64 (20180725)",
 "Type": "GTK",
 "OEM": false,
 "PartitionMethod": "use_device",
 "DownloadUpdates": false,
 "Language": "en",
 "Minimal": true,
 "RestrictedAddons": false,
 "Stages": ...}

For a 19.10 Ubuntu Mate minimal install option:

{"Media": "Ubuntu-MATE 19.10 \"Eoan Ermine\" - Beta amd64 (20190926.2)",
 "Type": "GTK",
 "OEM": false,
 "PartitionMethod": "use_device",
 "DownloadUpdates": false,
 "Language": "en",
 "Minimal": true,
 "RestrictedAddons": false,
 "Stages": ...}

After an edit the question became about

google cloud

Google calls that the "Image family". That one is not available from command line. I do not believe you can besides opening the google cloud console. The only command where I see "image family" used is when you "create" an instance.

cat /var/log/installer/media-info

There you can see which media was used for installation.