Miller (mlr) is like awk, sed, cut, join, and sort for name-indexed data such as CSV, TSV, and tabular JSON. You get to work with your data using named fields, without needing to count positional column indices. It is pipe-friendly and interoperates with the Unix toolkit. It operates on key-value-pair data while the familiar Unix tools operate on integer-indexed fields. This encompasses a variety of data formats, including but not limited to the familiar CSV, TSV, and JSON. (Miller can handle positionally-indexed data as a special case.)
WWW: https://johnkerl.org/miller/doc/
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