# IO.popen with an array in trunk

**URL:** <https://www.ruby-forum.com/t/io-popen-with-an-array-in-trunk/111241>\
**Category:** Development\
**Created:** [August 4, 2007, 5:53am UTC](https://www.ruby-forum.com/t/io-popen-with-an-array-in-trunk/111241 "2007-08-04T05:53:42Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![sheepman](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/d07c76/32.png) [@sheepman](https://www.ruby-forum.com/u/sheepman)\
**Post date:** [August 4, 2007, 5:53am UTC](https://www.ruby-forum.com/t/io-popen-with-an-array-in-trunk/111241/1 "2007-08-04T05:53:42Z")

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[http://www.ruby-lang.org/ja/man/index.cgi?cmd=view;name=IO#IO.2epopen](http://www.ruby-lang.org/ja/man/index.cgi?cmd=view;name=IO#IO.2epopen)

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$ ls  
bar foo

$ ruby-1.9 -ve ‘p IO.popen([“echo \*”],“r+”).read’  
ruby 1.9.0 (2007-06-30 patchlevel 0) [i686-linux]  
“bar foo\n”

$ ruby-1.9 -ve 'p IO.popen([“echo”, “_"],“r+”).read’  
ruby 1.9.0 (2007-06-30 patchlevel 0) [i686-linux]  
"_\n”

$ ruby-1.8 -ve ‘p IO.popen(“echo \*”,“r+”).read’  
ruby 1.8.6 (2007-06-18 patchlevel 5000) [i686-linux]  
“bar foo\n”

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[http://doc.loveruby.net/refm/api/view/method/IO/s/popen](http://doc.loveruby.net/refm/api/view/method/IO/s/popen)

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---

<div class="post-metadata">

**Author:** ![sheepman](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/d07c76/32.png) [@sheepman](https://www.ruby-forum.com/u/sheepman)\
**Post date:** [August 4, 2007, 9:57pm UTC](https://www.ruby-forum.com/t/io-popen-with-an-array-in-trunk/111241/2 "2007-08-04T21:57:56Z")

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At Sat, 4 Aug 2007 12:52:32 +0900,  
sheepman wrote in [ruby-dev:31344]:

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