Quote:
Originally Posted by barryem
Assuming you're using Windows the best tool for that is probably Windows Explorer. Open it on This PC if you're using a recent version of Windows and then do a search for *.epub, assuming you're using epub. Then when that's completed sort by filename and your duplicates will be fairly obvious as you read through the list. Books that are duplicated will appear twice in a row. You'll also see the file size so if they're different sizes you'll know they aren't exact duplicates.
If you have .mobo files or .azw or any other file type do the same with them.
Once you've pared away the duplicates you'll have an explorer window listing every ebook of that type on your computer. It's then a simple matter to copy them all to the same place.
if you have a fairly full hard drive this can take a while. Just let it run till it finishes and you have your list.
There are also programs that can find duplicate files for you. I always use Windows Explorer. It's a lot easier.
Another way to do this, if you prefer to have a listing of your books, is to click on Cortana, type CMD and in the window that pops up, type CD \. That'll take you to the top level of your hard drive. Then type dir /s /b *.epub > epublist.txt. And wait. That'll create a text file on your hard drive that lists every epub book in your computer with it's full path name and file name. If you aren't familiar with the command prompt this will seem strange to you but it's really very simple to do.
Barry
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The Find Duplicates plugin in Calibre is much, much faster. I have over ten thousand ebooks on my PC and Windows Explorer just freezes. I can search for a specific author or title, but even then it's simpler and faster to search in Calibre. Granted, most people probably have somewhat fewer books...