Wait! Aren't you violating the Unix philosophy by overloading qsv with all these features?

[jqnatividad]

One can argue that but if you look at the source code, qsv is basically composed of subcommands (most of which are less than 200 lines of code, with a lot of it - help usage text) sharing common CSV, Regular Expression and command-line parsing engines (all of which happens to be written by BurntSushi as well!).

Our ambition for qsv is to be a "CoreUtils of CSVs", with qsv's subcommand analogous to the coreutils programs.