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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.
This is unquoted, and may be the source of your issue. It's very important to properly quote strings in Bash because unquoted expansions generally don't work the way you'd expect. ShellCheck is a great tool for catching quoting bugs and countless other issues.
Honestly, any reasonably complex bash script uses (or should be using!) arrays, so just poke around and you'll probably see them. Here's a fairly straightforward script of mine with several arrays: https://github.com/dimo414/bkt/blob/master/benchmark.sh
NOTE:
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Hence, a higher number means a more popular project.