dd bs=4M if=bootable.iso of=/dev/sdX conv=fdatasync status=progress oflag=sync

Replace X with your usb drive letter.

$ git submodule status # get information

$ git ls-tree HEAD # which commit is bound to the current branch

$ git submodule update [--init] [--recursive] # align branch with submodules

To uninstall everything which was installed, do this:

xargs rm < install_manifest.txt

install_manifest.txt is created when you run make install.

If you have missing files, or any discrepancies between physical and virtual filesystem under NextCloud, do this:

Go to the root directory of the NexctCloud installation, the issue the command (use webserver's owner as user, here: www):

 sudo -u www php ./occ files:scan --all

# cd /etc/bind

Add these lines to your zone declaration in named.conf.local:

inline-signing yes;
auto-dnssec maintain;

Then:

# mkdir /var/cache/bind/keys
# cd /var/cache/bind/keys
# dnssec-keygen -a RSASHA256 -b 2048 -f KSK example.com
# dnssec-keygen -a RSASHA256 -b 1280 example.com
# cd /etc/bind 

Add to the zone "example.com" section in the file named.conf.local:

inline-signing yes;
auto-dnssec maintain;

Edit named.conf.options file, and add

-- If LuaRocks is installed, make sure that packages installed through it are
-- found (e.g. lgi). If LuaRocks is not installed, do nothing.
pcall(require, "luarocks.loader")