cat /etc/apt/sources.list
deb http://httpredir.debian.org/debian stretch main contrib non-free
#deb-src http://httpredir.debian.org/debian stretch main contrib non-free

deb http://httpredir.debian.org/debian stretch-updates main contrib non-free
#deb-src http://httpredir.debian.org/debian stretch-updates main contrib non-free

deb http://httpredir.debian.org/debian stretch-backports main contrib non-free
#deb-src http://httpredir.debian.org/debian stretch-backports main contrib non-free

deb http://security.debian.org/ stretch/updates main contrib non-free
#deb-src http://security.debian.org/ stretch/updates main contrib non-free

----------------------------------------------------------------------------------------------------------------------------------------------------------------------------

cat /etc/apt/sources.list.d/*
deb http://apt.armbian.com stretch utils
deb http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main
deb-src http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main
# This is file is generated.
# OMV-Extras repos
# 
# OMV-Extras.org
deb https://dl.bintray.com/openmediavault-plugin-developers/arrakis stretch main
# OMV-Extras.org Testing
deb https://dl.bintray.com/openmediavault-plugin-developers/arrakis-testing stretch main
# Plexmediaserver
deb https://dl.bintray.com/openmediavault-plugin-developers/arrakis-plex stretch main
deb http://packages.openmediavault.org/public/ arrakis main
deb https://openmediavault.github.io/packages/ arrakis main
# deb http://downloads.sourceforge.net/project/openmediavault/packages/ arrakis main
## Uncomment the following line to add software from the proposed repository.
deb http://packages.openmediavault.org/public/ arrakis-proposed main
# deb https://openmediavault.github.io/packages/ arrakis-proposed main
# deb http://downloads.sourceforge.net/project/openmediavault/packages/ arrakis-proposed main
## This software is not part of OpenMediaVault, but is offered by third-party
## developers as a service to OpenMediaVault users.
deb http://packages.openmediavault.org/public/ arrakis partner
# deb https://openmediavault.github.io/packages/ arrakis partner
# deb http://downloads.sourceforge.net/project/openmediavault/packages/ arrakis partner
deb [trusted=yes] file:/var/cache/openmediavault/archives /
deb https://archive.raspberrypi.org/debian/ stretch main
deb https://archive.raspbian.org/raspbian/ stretch main

deb http://mirrordirector.raspbian.org/raspbian/ jessie main contrib non-free rpi
deb-src http://archive.raspbian.org/raspbian/ jessie main contrib non-free rpi
deb http://www.ubnt.com/downloads/unifi/debian stable ubiquiti

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------

dpkg -l | grep openm
ii  libopenmpt0:armhf                    0.2.7386~beta20.3-3+deb9u3     armhf        module music library based on OpenMPT -- shared library
ii  openmediavault                       4.1.19-1                       all          openmediavault - The open network attached storage solution
ii  openmediavault-flashmemory           4.2.1                          all          folder2ram plugin for OpenMediaVault
ii  openmediavault-keyring               1.0                            all          GnuPG archive keys of the OpenMediaVault archive
ii  openmediavault-letsencrypt           3.4.5                          all          Generate free and valid SSL certificates for OMV
ii  openmediavault-minidlna              3.3.11                         all          OpenMediaVault miniDLNA (DLNA server) plugin
ii  openmediavault-omvextrasorg          4.1.15                         all          OMV-Extras.org Package Repositories for OpenMediaVault