mlr

mlr

like awk, sed, cut and join, but for CSV, TSV and JSON

curl -fsSL https://unflab.app/get | sh -s -- mlr

Installs to ~/.local/bin. Add --prefix /usr/local/bin to
put it somewhere else, or --uninstall to remove it.

Why it’s here

No dependency problem to solve — it’s here so it installs the same way as everything else.

Details

Built from that exact tarball, with its SHA-256 pinned in the
recipe. The binary links against nothing outside /usr/lib
and /System/, checked in CI before release.

Miller (mlr) does for CSV, TSV and JSON what awk, sed, cut,
join and sort do for plain text — but name-aware, so you work with
columns by name rather than by position.

mlr --icsv --opprint cat data.csv           # pretty-print a CSV
mlr --icsv --ojson head -n 5 data.csv       # CSV to JSON
mlr --csv filter '$quantity > 10' data.csv
mlr --csv sort -f name then stats1 -a sum,mean -f price -g category data.csv

man mlr and https://miller.readthedocs.io/ have the full command set.

Install

./install.sh                      # into ~/.local/bin
./install.sh --prefix /usr/local/bin
./install.sh --uninstall

About this build

A single Go binary built with CGO_ENABLED=0, so it links only
libSystem — no package manager, no runtime dependencies.

The command is mlr, not miller; that’s upstream’s name and predates
the Go rewrite.

Upstream publishes prebuilt macOS binaries too. This package exists so
mlr installs the same way as everything else here.

Upstream

• Home: https://miller.readthedocs.io/
• Source: https://github.com/johnkerl/miller
• Version: 6.15.0
• Licence: BSD-2-Clause (see LICENSE)

Miller is John Kerl’s work. unflab only compiles and packages it.