bw2012

Tested with UE 4.21

1. Open your UE4 engine folder [Program files or something else you like]\Epic Games\UE_4.21\Engine\Source\Programs\UnrealBuildTool
2. Open file Epic Games\UE_4.21\Engine\Source\Programs\UnrealBuildTool\Platform\Windows\VCToolChain.cs
3. Find method void AppendCLArguments_CPP(CppCompileEnvironment CompileEnvironment, List<string> Arguments)
4. Add Arguments.Add("/std:c++17"); to begin of method
5. Open Epic Games\UE_4.21\Engine\Source\Programs\UnrealBuildTool\UnrealBuildTool.csproj in MSVS 2017
6. Rebuild UnrealBuildTool
7. Open your project and rebuild it
8. Enjoy c++17 features

thielemans

#Downconvert 7.1 DTS-HD to DTS 5.1:
ffmpeg -i in.mkv -strict -2 -map 0:a:0 -c dts -af "channelmap=channel_layout=5.1" dts.mkv

#Downconvert 7.1 DTS-HD to AC3 5.1:
ffmpeg -i in.mkv -map 0:a:0 -c ac3 -ac 6 -ab 640k ac3.mkv

#Add downconverted audio streams via ffmpeg:
ffmpeg -i in.mkv -i dts.mkv -i ac3.mkv -map 0:v -c:v copy -map 0:a -c:a copy -map 1:a -c:a copy -map 2:a -c:a copy -map 0:s -c:s copy out.mkv
#Or use MKVToolNix

ajumalp

From https://synocommunity.com add http://packages.synocommunity.com to your NAS package sources.
For that, go to NAS->Package Cnter->Click Settings->Package Sources tab.
Then from the community, you can see Mosquitto. Install it. 
After installing, please stop the Mosquitto service before updating configuration. You can start service after changes.
Enable Admin login for Synology
Enable SSH in NAS
Download putty and connect to NAS Server
Login using admin 
Change to root user [sudo -i, {use admin password}]
Find mosquitto.conf file [find / -name mosquitto.conf]

borgfriend

#!/bin/bash
#Make sure we’re running with root permissions.
if [ `whoami` != root ]; then
    echo Please run this script using sudo
    echo Just type “sudo !!”
    exit
fi

#Check for 64-bit arch
if [uname -m != x86_64]; then