pty extension version 0.3 by A.ito

  1. Introduction

This extension module adds ruby a functionality to execute an arbitrary command through pseudo tty (pty).

  1. Install

Follow the instruction below.

(1) Execute

  ruby extconf.rb

then Makefile is generated.

(3) Do make; make install.

  1. What you can do

This extension module defines a module named PTY, which contains following module fungtions:


   This function reserves a pty, executes command over the pty 
   and returns an array. The return value is an array with three
   elements. The first element in the array is for reading and the 
   second for writing. The third element is the process ID of the
   child process. If this function is called with an iterator block,
   the array is passed to the block as block parameters, and the
   function itself returns nil.

   When the child process is suspended or finished, an exception is
   raised.  If this function is called with an iterator block,
   exception is raised only within the block.  Child process
   monitor is terminated on block exit.


   These functions are obsolete in this version of pty.
  1. License

(C) Copyright 1998 by Akinori Ito.

This software may be redistributed freely for this purpose, in full or in part, provided that this entire copyright notice is included on any copies of this software and applications and derivations thereof.

This software is provided on an “as is” basis, without warranty of any kind, either expressed or implied, as to any matter including, but not limited to warranty of fitness of purpose, or merchantability, or results obtained from use of this software.

  1. Bug report

Please feel free to send E-mail to

for any bug report, opinion, contribution, etc.