How to demonize qbittorrent-nox

[nio-kun]

Install packages:
# apt-get install qbittorrent-nox screen
Create file for systemd:
# vi /etc/systemd/system/qbittorrentd.service
And paste the content:

    [Unit]
    Description=Qbittorrentd Service
    After=network.target

    [Service]
    Type=forking
    User=USER
    ExecStart=/usr/bin/screen -dmS qbittorrent-nox qbittorrent-nox
    ExecStop=/usr/bin/screen -S qbittorrent-nox -X quit

    [Install]
    WantedBy=multi-user.target

Change USER to your desired existing username. Fist time start qbittorrent-nox normally via command line as this USER and type "y" to confirm. Then kill qbittorrent-nox.

Test the daemon:

# systemctl enable qbittorrentd.service
# systemctl start qbittorrentd.service

Reboot.
Enjoy.