获取CMD命令行的返回值

Name "CMD2LOG"
Caption "$(^Name)"
OutFile "CMD2LOG.exe"
RequestExecutionLevel admin
XPStyle on
!include "MUI2.nsh"
!insertmacro MUI_PAGE_INSTFILES
!insertmacro MUI_LANGUAGE "SimpChinese"
ShowInstDetails Show
BrandingText "www.yhxs3344.net"

Section
 ExecDos::exec 'cmd /c wmic csproduct list full |find "UUID"' "" "$EXEDIR\UUID.txt"

 ClearErrors
 FileOpen $0 $EXEDIR\UUID.txt r
 IfErrors done
 FileRead $0 $1
 FileClose $0

 MessageBox MB_OK "$1"
 done:
SectionEnd