The Wiert Corner – irregular stream of stuff

From one of my scripts: it will find a  64-bit 7z.exe if it was installed as part of the 7-zip installer, then run it with the parameters provided to the batch file.

  setlocal
  
:verify7zip
:: registry trick from http://www.robvanderwoude.com/files/sortdate2_nt.txt
:: extra trick: tokens=2* allows to get the  3rd (and beyond: space delimited!) value in one variable %%b
  for /F "tokens=2*" %%a IN ('REG QUERY "HKEY_LOCAL_MACHINE\SOFTWARE\7-Zip" /v Path64 2^>nul') do set sevenZipDirectoryPath=%%b
  call :checkMissingSetting sevenZipDirectoryPath     || goto :help
  
  set sevenZipExeFilePath=%sevenZipDirectoryPath%7z.exe
  if not exist "%sevenZipExeFilePath%" call :showError "No 7-zip executable at %sevenZipExeFilePath%" || goto :help
  
:run7zip
  "%sevenZipExeFilePath%" %*

  endlocal
  goto :end
  
:checkMissingSetting
  if not defined %1 call :notifyMissingSetting %1 && exit /b 1
  call :showSetting %1
  exit /b 0
  goto :end

:notifyMissingSetting
  echo Registry didn't provide the environment variable "%1"
  goto :end
  
:showError
  :: remove double quotes using tilde trick:
  echo %~1
  
:help
  echo Syntax: %0 7z.exe-commandline-parameters
  goto :end

:end

–jeroen