Running OPC UA .Net Standard PubSub reference server on Ubuntu 22.04 using dotnet-sdk-6.0

System info:
OS: Ubuntu 22.04
OPC UA .Net Standard under test: 1.4.371.96

Install MQTT broker

$: sudo apt install mosquitto

Install dotnet-sdk-6.0

$: sudo apt install dotnet-sdk-6.0

Install git as needed

$: sudo apt install git

Clone OPC UA .Net Standard git repo

$: mkdir ~/prj
$: cd ~/prj
$: git clone https://github.com/OPCFoundation/UA-.NETStandard.git
$: cd UA-.NETStandard
$: git checkout refs/tags/1.4.371.96

Run publisher

$: dotnet run --project Applications/ConsoleReferencePublisher/ConsoleReferencePublisher.csproj --framework net6.0

Run subscriber (on another terminal)

$: cd ~/prj/UA-.NETStandard
$: dotnet run --project Applications/ConsoleReferenceSubscriber/ConsoleReferenceSubscriber.csproj --framework net6.0

Unable to install updates (null): cannot refresh "snap-store": snap "snap-store" has running apps (snap-store)

Unable to install updates
(null): cannot refresh "snap-store": snap "snap-store" has running apps (snap-store), pids:#####

Using Ubuntu Software to update Snap packages failed on Ubuntu 22.04.

To fix it run the following:

$: killall snap-store
$: snap refresh

Running OPC UA .Net Standard PubSub reference server on Ubuntu 20.04 using dotnet-sdk-3.1

High Level Info:

OPC UA .Net Standard under test: 1.4.371.96
OS: Ubuntu 20.04 (>20.04 not working due to dotnet-sdk-3.1 is not supported)

Install dotnet-sdk-3.1

$: wget https://packages.microsoft.com/config/ubuntu/20.04/packages-microsoft-prod.deb -O packages-microsoft-prod.deb
$: sudo dpkg -i packages-microsoft-prod.deb
$: rm packages-microsoft-prod.deb
$: sudo apt update
$: sudo apt install dotnet-sdk-3.1

Clone OPC UA .Net Standard git repo

$: mkdir -p ~/prj
$: git clone -b 1.4.371.96 https://github.com/OPCFoundation/UA-.NETStandard.git

Install MQTT broker Mosquitto and supporting tools

$: sudo apt install mosquitto
$: sudo apt  install mosquitto-clients

Run mqtt sub client to see traffic

$: mosquitto_sub -h localhost -v -t '#'

Run reference PubSub publisher

$: cd ~/prj/UA-.NETStandard/Applications/ConsoleReferencePublisher
$: dotnet run --project ConsoleReferencePublisher.csproj --framework netcoreapp3.1

Run reference PubSub subscriber

$: cd ~/prj/UA-.NETStandard/Applications/ConsoleReferenceSubscriber
$: dotnet run --project ConsoleReferenceSubscriber.csproj --framework netcoreapp3.1

Ref(s):
Install the .NET SDK or the .NET Runtime on Ubuntu