From: Jim Freeze <jfreeze@...>
Date: 2002-01-10T06:27:25+09:00
Subject: IO.popen not the same as Open3.popen3 ??

Hi:

I can't seem to get Open3.popen3 to work the same
as IO.popen, ie, I can't get it to accept a command
with commandline arguments.

Here is the code:
--tester
#! /usr/local/bin/ruby

require 'open3'
puts "-------- IO.popen() ------------"
puts "`../bsimtran rulefile type in out`"
sout = IO.popen("../bsimtran rulefile type in out", "w+")
sout.each_line { |line| puts line }
sout.close

puts "-------- Open3.popen3 ------------"
puts "`../bsimtran rulefile type in out`"
sin, sout, serr = Open3.popen3("../bsimtran rulefile type in out", "w+")
puts " -- stdout -- "
sout.each_line { |line| puts line }
puts " -- stderr -- "
serr.each_line { |line| puts line }
sin.close_write
sout.close
serr.close



-- output of tester
-------- IO.popen() ------------
`../bsimtran rulefile type in out`
Input section for type is not found in the rule file. 
-------- Open3.popen3 ------------
`../bsimtran rulefile type in out`
 -- stdout -- 
 -- stderr -- 
/usr/local/lib/ruby/1.6/open3.rb:33:in `exec': No such file or directory - "../bsimtran rulefile type in out" (Errno::ENOENT)
        from /usr/local/lib/ruby/1.6/open3.rb:33:in `popen3'
        from /usr/local/lib/ruby/1.6/open3.rb:21:in `fork'
        from /usr/local/lib/ruby/1.6/open3.rb:21:in `popen3'
        from /usr/local/lib/ruby/1.6/open3.rb:21:in `fork'
        from /usr/local/lib/ruby/1.6/open3.rb:21:in `popen3'
        from ./tester:28

Can anyone see if I am doing something wrong?
Thanks

-- 
Jim Freeze
Today is a fine day for Ruby programming.
www.freeze.org