From: Park Heesob <phasis@...>
Date: 2003-01-04T11:03:11+09:00
Subject: Re: using '&' as part of the command passed to IO.popen


Hi,
----- Original Message -----
From: "Jason Persampieri" <jason@persampieri.net>
To: "ruby-talk ML" <ruby-talk@ruby-lang.org>
Sent: Saturday, January 04, 2003 10:05 AM
Subject: using '&' as part of the command passed to IO.popen

>
> Hey folks,
>
> I'm having a problem calling a system command where
> one of the parameters happens to contain an ampersand
> (&).  Popen apparently sees this as a command
> separator, right?  I've tried replacing it with \046,
> but it gets processed before being passed to popen.
> Anyone have any ideas?
>
> Ruby 1.7.3 on Win2K
>

According to microsoft document:

You can use multiple commands separated by the command separator && for
string, but you must enclose them in quotation marks
(for example, "command&&command&&command").

The following special characters require quotation marks: & < > [ ] { } ^ =
; ! ' + , ` ~ [white space]

Refer to http://www.microsoft.com/windowsxp/home/using/productdoc/en/Cmd.asp

You must quote like this:
popen("ruby -e 'p ARGV'  \"abc&def\" ","r")

Park Heesob