openmediavault 5.6 安装 omv-extras
转载：
csdn：https://blog.csdn.net/Yu1441/article/details/116140034
先ssh登录进入系统，然后su输入密码获取root权限。
#1.
apt-get update
#2.
apt-get install dirmngr
#3.
apt --fix-broken install
#4.
apt-get --yes --no-install-recommends install dirmngr gnupg
#5.
wget http://omv-extras.org/openmediavault-omvextrasorg_latest_all5.deb
#6.
dpkg -i openmediavault-omvextrasorg_latest_all5.deb