ruby-stdbuf

An experimental implementation of stdbuf(1) support of Ruby.

see: Feature #17148: stdbuf(1) support - Ruby master - Ruby Issue Tracking System

Usage

Add require 'stdbuf' into your code.

Then use stdbuf(1).

% ruby -rstdbuf -e'loop{puts Time.now; sleep 1}' | cat
^C-e:1:in `sleep': Interrupt
        from -e:1:in `block in <main>'
        from -e:1:in `loop'
        from -e:1:in `<main>'

% stdbuf -o 0 ruby -rstdbuf -e'loop{puts Time.now; sleep 1}' | cat
2018-02-23 12:43:05 +0900
2018-02-23 12:43:06 +0900
2018-02-23 12:43:07 +0900

Supported Environment

• GNU coreutils
  • Linux
  • Cygwin
• FreeBSD
• NetBSD
• etc...