ebook-files not recognized after conversion by calibr-server

[riff]

I run a calibre-server on my Debian-7-NAS.
Database+ebooks are stored in /media/xxx/calibre. I use EPUB as prefered format, but want to provide MOBI as well. So i converted all EPUBs with command-line to MOBI, set permissions correct (same as the epub, 750), restarted server-instance, but the server does not offer the MOBI in Web-GUI.

#!/bin/bash
IFS=$'\n'
for file in `find /media/xxx/calibre/ -type f -name "*.epub"`
do
/opt/calibre/ebook-convert "$file" "${file%epub}mobi" && chown calibre:users "${file%epub}mobi"
done

Why do the MOBI show not up?

I think I have to add the file-format to DB with

calibredb add_format --dont-replace id ebook_file

but for this I need to get the ID of each Ebook-File which I want to add to the DB, so that I can use it in my Batch-Script.
Do I need to specify the location of DB separately?

[mbovenka]

Originally Posted by riff

Why do the MOBI show not up?

Because you mucked about under Calibre's skirts. Ebook-convert does just that: it converts an ebook file from one ebook format to another. It does not update Calibre's database (metadata.db)

i.e. Calibre has no idea the MOBI files exist, even though they are physically there.

If you run 'Check database' and have it compare the database with the files on disk, it will show the MOBI files as extra files. I'm not sure you then get the option to 'adopt' them, as it were; I don't think so, actually. You do get the option to delete them, that I know.

If you want to do this, do the conversion from the GUI.

edit: Or start messing about with the other command line tools, as you yourself suggest :-)

[riff]

for

./calibredb check_library

i get

No library found at None

./calibredb --library-path /media/xxx/calibre/metadata.db check_library

seems to have wrong synthax

I am not that advanced in using bash and command line. I did connect with GUI to the server (Remote-DB), but is crap converting the ebooks like that, because they will be downloaded, converted and uploaded again. I work a lot far away from home, so my goal was that the server can work on conversion itself. Using GUI from remote just takes sooo long an blocks my laptop meanwhile. On lost VPN-Connection, conversion is stopped with an error.

Edit:

./calibredb --with-library=/media/xxx/calibre/ check_library

worked, shows that there are new files, but does not add them to DB.

Edit:
I tried

./calibredb --with-library=/media/xxx/calibre/ add_format book-id /media/xxx/calibre/author/book-title/book-title.mobi

but has wrong synthax.

Edit:

./calibredb add_format --with-library=/media/xxx/calibre/ book-id /media/xxx/calibre/author/book-title/book-title.mobi

worked, I see my MOBI! Now I have to refit my bash-script.

Edit: Script now looks like this:

#!/bin/bash
IFS=$'\n'
for file in `find /media/xxx/calibre/ -type f -name "*.epub"`
do
    /opt/calibre/ebook-convert "$file" "${file%epub}mobi" && chown calibre:users "${file%epub}mobi"
    idstring=`dirname "${file%epub}mobi"`
    idstring=${idstring%\)}
    /opt/calibre/calibredb add_format --with-library=/media/xxx/calibre/ ${idstring##*\(} "${file%epub}mobi"
done

Thanks a lot!

Edit 23.02.2017

I added a check for existing MOBI-Files in my script

#!/bin/bash
    IFS=$'\n'
    for file in `find /media/xxx/calibre/ -type f -name "*.epub"`
    do
     if [ ! -f "${file%epub}mobi" ]
     then
      /opt/calibre/ebook-convert "$file" "${file%epub}mobi" && chown calibre:users "${file%epub}mobi"
      idstring=`dirname "${file%epub}mobi"`
      idstring=${idstring%\)}
      /opt/calibre/calibredb add_format --with-library=/media/xxx/calibre/ ${idstring##*\(} "${file%epub}mobi"
     fi
    done

It works out quite well for a small DB with 100 books, skips the existing if there are any.
When I apply the script to my large DB it works out well in beginning, but messes things up after a while.

When my source EPUB file is for example

"Albert Einstein - My Biography.epub"
a file with name
"Albert Einstein - My Biography.mobi"
should be created and added to the DB.
But somehow in between I get two MOBI Files in one book directory, the
"Albert Einstein - My Biography.mobi"
and another one like
"Einstein, Albert - My Biography (French).mobi"

My DB does not contain any MOBI at the beginning, so I can exclude the fact the "creepy file" existed before. Only a couple books get two MOBIs, I can't tell why. Also I can't figure out where these files come from and have a different name than the script would generate.
This is quite annoying, because it messes up my DB and I have to restore a backup.

How can I figure out what is wrong and how can I solve my problem?

I appreciate your help, thank you in advance.