A set of Unix command line tools for quick and convenient batch processing of tabular text files (a.k.a., tab-delimited, csv, or flat file format) with a header line. Provides delimiter and compression detection, column reference by name.
* tblmap: per-line ("map") computation: derive columns through an expression, delete, reorder, filter rows.
* tblred: compute ("reduce") aggregations (e.g., sum, average) over groups defined by key columns.
* tbldesc: Summarize columns in file...