Check if Command window is running with administrator permissions

check_admin.cmd

@echo off
goto check_Permissions

:check_Permissions
    echo Administrative permissions required. Detecting permissions...

    net session >nul 2>&1
    if %errorLevel% == 0 (
        echo Success: Administrative permissions confirmed.
    ) else (
        echo Failure: Current permissions inadequate.
    )

    pause >nul

Test-IsAdmin.ps1

function Test-IsAdmin {
    try {
        $identity = [Security.Principal.WindowsIdentity]::GetCurrent()
        $principal = New-Object Security.Principal.WindowsPrincipal -ArgumentList $identity
        return $principal.IsInRole( [Security.Principal.WindowsBuiltInRole]::Administrator )
    } catch {
        throw "Failed to determine if the current user has elevated privileges. The error was: '{0}'." -f $_
    }

    <#
        .SYNOPSIS
            Checks if the current Powershell instance is running with elevated privileges or not.
        .EXAMPLE
            PS C:\> Test-IsAdmin
        .OUTPUTS
            System.Boolean
                True if the current Powershell is elevated, false if not.
    #>
}