Top 2 delimited-files open source projects

A list of command line tools for manipulating structured text data

A set of Unix shell command line tools for quick and convenient batch processing of tabular text files (a.k.a., tab-delimited, tsv, csv, or flat data file format) with a header line. Provides column reference by name, automatic delimiter and compression detection for per-line transformations, sql-like group-by operation and relational join.