Usage: calibre-debug [options] Run an embedded python interpreter. Whenever you pass arguments to calibre-debug that have spaces in them, enclose the arguments in quotation marks. Options: --version show program's version number and exit -h, --help show this help message and exit --update-module=UPDATE_MODULE Update the specified module in the frozen library. Module specifications are of the form full.name.of.module,path_to_module.py -c COMMAND, --command=COMMAND Run python code. -g, --gui Run the GUI --migrate Migrate old database. Needs two arguments. Path to library1.db and path to new library folder. Created by Kovid Goyal