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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.
As for POSIX, I'll just type bash and do what I need to do, or call a script. You also might want to use the plugin bass, because some programs do not pick up on variables that are set in fish. I think there are other similar plugins, but in my experience bass is the best one. https://github.com/edc/bass
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