Quote:
Originally Posted by DNSB
Out of curiosity, why are you interested in displaying the UUID? It is rather useless since it is randomly generated and can easily be modified. Some ePubs use the GUID pattern for the ID (which seems to be the one you are interested in) and yet others use an alphanumeric string of varying length.
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It's a bit of a long story. I use MoonReader on my devices and want to share reading position and annotations between devices. To do this, the book file has to always have the exact same name. The only way I have found to do this reliably is to use Calibre Companion and have the mobile book files named after the UUID. In this way, if the title or authors were to get tweaked I wouldn't lose my annotations. It works great, but now I have directories full of files named after the Calibre's UUIDS. I am in the process of repairing several years worth of messed up entries and it is not easy to find out which Calibre book corresponds to which UUID.