When scanning files, Ubooquity iterates over the folders you defined in your preferences. For each file it finds, it adds it to the database (or updates it if the files is already in the database but has changed since the last scan).

Then it removes from the database all the files that it was not able to find during the scan.

There is no point in adding a deletion confirmation as the deleted files are only the ones which in fact do not exists anymore at the place they used to be (for Ubooquity, as for the rest of your computer, the "identity" of a file is its full path).

This means your files were removed from the database because Ubooquity was not able to find them during the scan. This could happen (from the top of my head):

• if you changed the location of your library (If Ubooquity still scans the old location, it won't find anything)
• if your preferences file ("preferences.xml") has been modified of corrupt one way or another. That's where Ubooquity stores the folders it has to scan
• if your library was on a network drive that was unavailable at the time of the scan

For the last case (network drive), a workaround would be to disable autoscan in Ubooquity options and do only manual scans when the network drive is available.

Yes: grep and awk for instance.

No, the folder info feature allows only to add HTML content to a folder page and use resources (like images) located in this folder (accessed through the "[[FOLDER]]" placeholder).

There is no other variable you could use in your HTML.

Your preferences are stored in a files called "preferences.xml" in the working directory of Ubooquity (the directory from which the program is launched, not necessarily the directory containing the jar file).

So either something happened to this file (deleted, corrupted, a change in user permission) or Ubooquity runs in another directory.

By the way, make sure you use version 1.8.2 of Ubooquity. Version 1.8.0 had a bug which might cause the problem you are describing.

You can find a few explanation lines and a sample in the 1.8.0 release post.

Let me know if you need more details on this feature.

I'll try to test it on my side in a few days, but as far as I know, the reverse proxy feature is working fine.

I'll let you know the result of my test once it's done.

It's up !

(and the FAQ has been updated with the link)

Did you take a look at this thread ?