Use convert or ghostscript to grab the odd-numbered pages of a PDF

Question

I have a PDF that consists of several hundred pages of bilingual text. Since I need to use OCR on each language separately, I want to grab the even and odd pages and make two separate PDFs, using convert or ghostscript. The language I want to do first is on the odd-numbered pages. What convert or ghostscript command can I use to grab these and write them to a new file?

Answer 1

I'd do it with pdftk.

pdftk A=all.pdf cat Aodd output odd.pdf
pdftk A=all.pdf cat Aeven output even.pdf