Very quick/raw script to get a list of members of local admin group in a resultant !! separated list

get-localadmins.ps1

#--- Lists local users in local Administrators group: ---
((get-wmiobject Win32_GroupUser -computer $computername | `
where { `
  ( $_.GroupComponent -like '*Administrators*' ) `
  -and
  ( $_.GroupComponent -notlike '*$((get-wmiobject win32_computersystem).domain.split('.')[0])*' ) `
  -and `
  ( $_.PartComponent -like '*Win32_UserAccount*') `
  -and `
  (
    ( $_.PartComponent -like "*Domain=""$computername""*") `
    -or `
    ( $_.PartComponent -notlike "*Domain=""$((get-wmiobject win32_computersystem).domain.split('.')[0])""*") `
  ) `
} `
).partcomponent) | foreach { ($_).split('"')[1,3] ; "!!"}





#--- Lists local and domain users in local Administrators group: ---
((get-wmiobject Win32_GroupUser -computer $computername | `
where { `
  ( $_.GroupComponent -like '*Administrators*' ) `
  -and
  ( $_.GroupComponent -notlike '*$((get-wmiobject win32_computersystem).domain.split('.')[0])*' ) `
  -and `
  ( $_.PartComponent -like '*Win32_UserAccount*') `
  -and `
  (
    ( $_.PartComponent -like "*Domain=""$computername""*") `
    -or `
    ( $_.PartComponent -like "*Domain=""$((get-wmiobject win32_computersystem).domain.split('.')[0])""*") `
  ) `
} `
).partcomponent) | foreach { ($_).split('"')[1,3] ; "!!"}