I want to convert PowerPoint (.ppt) and Excel (.xls) files to a plain text format (.txt) from the command line on a server running Linux. The server does not have xorg or similar libraries installed, and installing them is not an option.
I have tried 'catppt' from catdoc, but it did not work for me.
~$ catppt presentacion_16x9.ppt Violación de segmento
(The message means "Segmentation fault")
What software should I use for this conversion?