[Question] How to check Zipped file format on LibreOffice

[Caolán McNamara]

On Thu, 2021-11-25 at 02:40 +0900, DaeHyun Sung wrote:
> Hmm, I have hwp v3.0 file and hwp v5.0 file. 
> 
> I also attached test hwp v5.0 file "hello.hwp" and hwp v3.0 file
> "hellov3.hwp".

Yeah, hello.hwp...

$ gsf list hello.hwp
hello.hwp:
d  2021-08-14 22:45:54           0 *root*
f                             1519 DocInfo
f                               30 PrvText
d  2021-08-14 22:45:54           0 Scripts
f                               16 Scripts/DefaultJScript
f                               13 Scripts/JScriptVersion
d  2021-08-14 22:45:54           0 BodyText
f                              215 BodyText/Section0
f                             5817 PrvImage
d  2021-08-14 22:45:54           0 DocOptions
f                              524 DocOptions/_LinkDoc
f                              256 FileHeader
f                              477 HwpSummaryInformation

is a "Microsoft Compound File Binary Format" aka "Compound Document
File Format" or "ole" file format.
https://en.wikipedia.org/wiki/Compound_File_Binary_Format 
we have lots of existing support for this so I expect the earlier
mentioned snippet will help.