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Command redu

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fcorbelli edited this page Sep 28, 2026 · 2 revisions

Will it compress? Ask before wasting an hour.

Quick summary

redu is a technical (quick) exam of files: an estimate of compressibility (0 = none, 255 = high).

Power user usage

  • No specific switches in the integrated help.

Lo spiegone

Dispatched as command R to redu().

Real-world examples

zpaqfranz redu z:\*.exe

TOP suggested read: double quotes

HIGHLY suggested read: how to select file(s) in zpaq(franz)

Quickstarts FreeBSD Linux Mac Windows Hidden gems

Make it yourself TL;DR Target example (click here if in hurry) Compile-time switches Universal Makefile Quicker-and-dirtier

GUI extraction on Windows catpaq

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