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rhino-update
Rhino Update is a command-line utility script which will provide updates to items that do not hit the Ubuntu devel repositories, such as the latest Linux Kernel.
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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
> Unclear from the article is whether or not they will continue to support LTS versions
Why would this unofficial third-party system that takes a bunch of steps on top of the official Ubuntu release have any effect on Canonical support policies? Sure, the article is badly written and unclear, but that it isn't an official Ubuntu thing is pretty clear from the description of how it works:
“How is this achieved? According to the documentation, it’s mainly accomplished by tracking ‘devel’ repositories, which are repositories that have existed for every release but are not often used in production. You must start with a modified Ubuntu image which can be found here. Then, the distribution must be ‘initialized’ by follow steps in the documentation. Lastly, you need to use their custom tool called ‘rhino-update’ which extends the capabilities to apt that allow the distribution to update itself outside of the normal confines of a traditional Ubuntu release.”
It's even more clear if you go the linked page on Rolling Rhino Remix that it describes instead of the incompetently-written article:
https://rollingrhinoremix.github.io/
“Rolling Rhino Remix is an un-official Ubuntu flavour which converts the Ubuntu operating system into a rolling release Linux distriibution by tracking the devel series.”