For a windows system administrator, we need to check the member of the local administrators group.

There is also a function in the microsoft gallery:

function get-localadmin { 
param ($strcomputer) 
 
$admins = Gwmi win32_groupuser –computer $strcomputer 
$admins = $admins |? {$_.groupcomponent –like '*"Administrators"'} 
 
$admins |% { 
$_.partcomponent –match “.+Domain\=(.+)\,Name\=(.+)$” > $nul 
$matches[1].trim('"') + “\” + $matches[2].trim('"') 
} 
}

 

With this function, we can test if the current logged on user is the member of the local admin group.

$targetcomputer = "analyst1"

$OutPutFile= "\\bgl-mdc\shared\IT\users\admins.csv"

##Don't Change the code below:
function get-localadmin { 
param ($strcomputer) 
 
$admins = Gwmi win32_groupuser –computer $strcomputer 
$admins = $admins |? {$_.groupcomponent –like '*"Administrators"'} 
 
$admins |% { 
$_.partcomponent –match “.+Domain\=(.+)\,Name\=(.+)$” > $nul 
$matches[1].trim('"') + “\” + $matches[2].trim('"') 
} 
}

$localAdmins = get-localadmin $targetcomputer
##Get the current logged on user
$LoggedUsernameObj = Gwmi -class Win32_ComputerSystem –computer analyst1 | select UserName
#WMIC /Node:$targetcomputer ComputerSystem Get UserName
$LoggedUsername=$LoggedUsernameObj.UserName

"The logged on user is :" + $LoggedUsername +"`r`n"

ForEach ( $admin in $localAdmins )
{
$Islocaladmin = $false
If ( $admin -eq $LoggedUsername )
{
$Islocaladmin = $true
# Then we want to record this user name
add-content $OutPutFile ($admin + "," + $targetcomputer)
}

}

Reference:

https://gallery.technet.microsoft.com/scriptcenter/Get-remote-machine-members-bc5faa57