How do I check to see if the currently logged-in user is in a specific group?

Question

I am attempting to create a batch script that changes whether or not a user is in a specific group on Active Directory. I know how to get a list of groups the user is in with this line:

whoami \groups

What I don't know is how to query that list and run a command based on whether or not a certain group is in that list. I'm looking for something along the lines of:

set %groups% whoami \groups
if foo in %groups% echo run

This doesn't run (obviously), but I expect the output to be "run" if a group named foo is in the list of groups obtained by whoami \groups.

Answer 1

Try like this:

@echo off
set "groupToCheck=BUILTIN\Administrators"

whoami /groups | findstr /B "%groupToCheck:\=\\%\>" >nul 2>&1 && (
  echo I'm in %groupToCheck%
) || (
  echo I'm NOT in %groupToCheck%
)