Quote:
Originally Posted by bmeddings
So what I'm really trying to do is to ascertain whether there are any books in any of my three backups of my Calibre-Library that are not on my present D:\Calibre-Library. Then import them into my D:\Calibre-Library.
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Basil,
You could Find all the Duplicates in a particular back-up as compared to your D:|Calibre-Library, and then "invert" the selection to capture the selection of all books that are
not duplicates (i.e., are missing) from your D:|Calibre-Library.
To do the above, after you have run the Find Duplicates plug-in for Library-level duplicates, simply "mark" all of the results using CTL+M. Then, in the Calibre Search Bar specify "marked:false", and hit enter. Then, select all of the resulting books, Right-Click > Copy to Library > Calibre-Library.
Note that you might want to first rename D:\Calibre-Library so that the "Copy To" is different in the Calibre list of choices, which will of course offer all of your backups as the target recipient too. Use the standard Calibre "rename library" function to do this. Otherwise, you might end up copying the missing books to another backup library instead of D:\Calibre-Library if you are not careful. Or, you could also "Choose Library By Path" instead of selecting a specific Library Name. Whatever is easier for you.
DaltonST