Any there any linux tools that will extract the text from a Powerpoint pptx file? I tried catppt but it just returns
file.pptx is not OLE file or Error.
abiword --to=txt file.pptx also returns an empty text file.
I can open the file in libreoffice but it doesn't seem to have an "export as text" option. As a guess I also tried
libreoffice --headless --convert-to txt:Text file.pptx but that doesn't even return an empty file.