[ubuntu] Extract Excel metadata

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http://ubuntuforums.org – Good morning, I've been working on a script to extract metadata from files, and I've been successful with extracting ALL metadata from doc, pdf, docx, and ppt files. However, I am unable to extract certain metadata from Excel files. While the "extract" command shows me general information about the excel file, it doesn't give me printers and folders that were also within the metadata. I know there are printers and folders within the metadata because I can extract it on Windows using FOCA. Any help would be greatly appreciated. I've tried numerous solutions from other articl (Hardware)