To 'finger' a user, all you need to do is call finger <user>@<hostname> on the command line:
[nikdoof@s1] (~) % finger nikdoof@dimension.sh [dimension.sh] Plan: https://nikdoof.com/now Pronouns: he/him Projects: Furthering the development of dimension.sh Online.
On some servers, finger responds with special output when calling @<domain> or root@<domain>
[nikdoof@s1] (~) % finger @dimension.sh [dimension.sh] __ __ /\ \ __ __ /\ \ \_\ \/\_\ ___ ___ __ ___ ____/\_\ ___ ___ ____\ \ \___ /'_` \/\ \ /' __` __`\ /'__`\/' _ `\ /',__\/\ \ / __`\ /' _ `\ /',__\\ \ _ `\ /\ \L\ \ \ \/\ \/\ \/\ \/\ __//\ \/\ \/\__, `\ \ \/\ \L\ \/\ \/\ \ __/\__, `\\ \ \ \ \ \ \___,_\ \_\ \_\ \_\ \_\ \____\ \_\ \_\/\____/\ \_\ \____/\ \_\ \_\/\_\/\____/ \ \_\ \_\ \/__,_ /\/_/\/_/\/_/\/_/\/____/\/_/\/_/\/___/ \/_/\/___/ \/_/\/_/\/_/\/___/ \/_/\/_/ dimension.sh is a shared linux shell system (or pubnix), open to everyone and anyone to use, learn, and experiment. If you're interested in joining check out the website: https://dimension.sh users currently logged in are: nikdoof + pts/0 2021-06-03 09:44 00:02 801233
On dimension.sh, we have a operating Finger server that is available to the wider internet. You can customize what is returned to the caller with a collection of files in your home directory.