As two file names include "protected", probably to make any change you need to "unprotect" them first. Is it possible and allowed? Other than that, the "file" command can tell you a file type. For instance type: file asimovs_2018-11-0001.3gp asimovs_2018-11.ncx If it falls in the "text" category you can display it in a pager like less, most or more. Knowing the results can maybe help someone help you. Best, Didier On 22/12/2018 13:20, Linux for blind general discussion wrote: > Okay, not sure which version of Daisy I'm working with here, but > here's the output from ls on the root of one of the magazines: > > asimovs_2018-11-0001.3gp > asimovs_2018-11-0002.3gp > asimovs_2018-11-0003.3gp > asimovs_2018-11-0004.3gp > asimovs_2018-11-0005.3gp > asimovs_2018-11-0006.3gp > asimovs_2018-11-0007.3gp > asimovs_2018-11-0008.3gp > asimovs_2018-11-0009.3gp > asimovs_2018-11.ncx > asimovs_2018-11.opf > asimovs_2018-11.pncx > asimovs_2018-11.ppf > asimovs_2018-11.smil > asimovs_2018-11ann.3gp > asimovs_2018-11hdgs.3gp > asimovs_2018-11pdtb.md5 > dtbsmil110.dtd > ncx110.dtd > oeb1.ent > oebpkg101.dtd > pdtb_protected.smil > protected.mp3 > us-nls-dm-asimovs_2018-11.ao > > I don't recognize most of the filename extensions, but I suspect the > .3GP files are the actual audio since du -sh * | sort -h identifies > them as being the largest files in the directory. I also know > protected.mp3 is simply a recording that plays when trying to play the > book on a unauthrized device. > > I'm assuming most, if not all, of my current Daisy Library is the same > major revision of the format as most of the magazines are dated 2017 > or 2018, and there are five files that Jdupes identifies as being > identical across 137 audiobooks, which I believe is the entire > library. > > I hope that helps others in narrowing down exactly which beast we're > dealing with. > _______________________________________________ Blinux-list mailing list Blinux-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/blinux-list