@rem file: fdb_metadata_crc.bat 
@echo off
if .%1.==.. goto syntax
@rem replace this with setting of your host: set firebird=C:\1INSTALL\FIREBIRD\FB25SNAP
%firebird%\bin\isql -x %1 1>%1.metadata.tmp 2>&1
rar m -m0 %1.metadata.rar %1.metadata.tmp 1>nul
rar v %1.metadata.rar | findstr /c:".....A">%1.metadata.tmp
for /f "tokens=7 delims= " %%a in (%1.metadata.tmp) do echo %%a
del %1.metadata.tmp 2>nul
del %1.metadata.rar 2>nul
pause
goto end
:syntax
  cls
  @echo.
  @echo Usage:
  @echo.
  @echo %~f0  your_database.fdb
  @echo.
  @echo Result: CRC of extracted metadata after packing it in .RAR
  @echo.
  pause
:end