[Petya V4sechkin]

saveandrey, а так?

Код:

@echo off
for /f "usebackq tokens=1* delims==" %%i in (`wmic.exe useraccount where "localaccount = true and name = '%username%'" get sid /value ^| find.exe "="`) do set sid=%%j
set sid=%sid:~0,-1%
echo %sid%