How do I know if my PostgreSQL server is using the "C" locale?

How do I know if my PostgreSQL server is using the "C" locale?

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How to set thousand separator for PostgreSQL?

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What is the difference between C and Posix locales on Postgres?

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Best practise for storing multilingual strings

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Configuring Locales on Linux for PostgreSQL

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Sort list of tuples considering locale (swedish ordering)

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How to fix "Error: the locale requested by the environment is invalid" during postgresql cluster upgrade (pg_upgradecluster)

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How does the locale setting LC_NUMERIC work in PostgreSQL?

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