[gilles@localhost core]$ digikam --help
Usage: digikam [options]
Professional Photo Management with the Power of Open Source
Options:
-v, --version Displays version information.
-h, --help Displays this help.
--author Show author information.
--license Show license information.
--desktopfile <file name> The base file name of the desktop entry for this
application.
--download-from <path> Open camera dialog at <path>
--download-from-udi <udi> Open camera dialog for the device with Solid UDI
<udi>
--detect-camera Automatically detect and open a connected gphoto2
camera
--database-directory <dir> Start digikam with the SQLite database file found
in the directory <dir>
--config <config> Start digikam with the configuration file
<config>
[gilles@localhost core]$
The --database-directory option can help you
Gilles Caulier