Check if script is running as Administrator or with elevated privilege, if not use RunAs

Use-RunAsAdmin(function).ps1

function Use-RunAs {
    # Check if script is running as Administrator or with elevated privilege, if not use RunAs
    # Use Check Switch to check if admin
    param([Switch]$Check)
    
    # Detecting OS Platform, win32nt for Windows or unix for Linux/Unix
    $OSPlatform = (([System.Environment]::OSVersion.Platform).ToString()).ToLower()
    if ($OSPlatform -eq "unix") {
        Write-Warning "Detected Linux/Unix OS, you don't need this, use sudo"
        exit # Quit this session of powershell
    } 
    
    $IsAdmin = ([Security.Principal.WindowsPrincipal] [Security.Principal.WindowsIdentity]::GetCurrent()`
    ).IsInRole([Security.Principal.WindowsBuiltInRole] "Administrator")
    if ($Check) { return $IsAdmin }
    if ($MyInvocation.ScriptName -ne "") {
        if (-not $IsAdmin) {
            try {
                # Detecting Powershell (powershell.exe) or Powershell Core (pwsh), will return true if Powershell Core (pwsh)
                if ($IsCoreCLR) { $PowerShellCmdLine = "pwsh.exe" } else { $PowerShellCmdLine = "powershell.exe" }
                $arg = "-file `"$($MyInvocation.ScriptName)`""
                Start-Process "$PSHOME\$PowerShellCmdLine" -Verb Runas -ArgumentList $arg -ErrorAction 'stop'
            }
            catch {
                Write-Warning "Error - Failed to restart script with runas"
                break
            }
            exit # Quit this session of powershell 
        }
    }
    else {
        Write-Warning "Error - Script must be saved as a .ps1 file first"
        break
    }
}

# Example
Use-RunAs
"Script Running As Administrator"