How to use -reindex

Question

I am working on creating a Pathing Guide for macOS Installation. The

IN:

./bitcoind

OUT:

2023-01-02T01:26:12Z : You need to rebuild the database using -reindex to go back to unpruned mode.  This will redownload the entire blockchain.
Please restart with -reindex or -reindex-chainstate to recover.

A good overview of when to use -reindex is provided on StackExchange. However, there is no documentation or instruction explaining what -reindex is or how to use it.

Answer 1

In the process of writing the question, I discovered the answer solving the problem:

./bitcoind -reindex