txt-sushi

txt-sushi is a collection of command line utilities for processing comma-separated and tab-delimited files (AKA flat files, spreadsheets). The most important utility (tssql) lets you perform SQL selects on CSV files. By focusing exclusively on processing text files with a tabular structure, TxtSushi simplifies common tasks like filtering, joining and transformation that would take more effort to accomplish with a general purpose text processing language.