Question

The pdftk tool “dump_data” function can be used to deliver meta information about a pdf, including the number of pages. The following command…

pdftk test.pdf dump_data | find "NumberOfPages"

…outputs the full data dump line, for example:

"Number of pages: 32"

How can I get the count value (32 in the above case) into a new variable for further processing in the bat file?

Answer 1

If the format of the line is fixed and matches the one you’ve shown, you could try something like this:

@ECHO OFF
>testfile ECHO Number of pages: 32
FOR /F "delims=: tokens=2" %%A IN ('TYPE testfile ^| FIND "Number of pages"') DO SET /A pagenum=%%A
ECHO %pagenum%

Outputs:

32

Naturally, >testfile ECHO ... line is just for testing purposes, and the TYPE testfile part of the FOR loop should be replaced by your pdftk test.pdf dump_data.