From: Mark Wilson <mwilson13@...>
Date: 2003-09-17T14:13:57+09:00
Subject: How do I use grep with the Shell class

Hello,

I'm trying to do the following in Ruby using the Shell class:

 From the command line, I would write this:

% grep -l PATTERN * | xargs mv --target-directory=DIRECTORY

Because I have many directories I want to visit in turn, I've tried the 
following:

directories.each do |d|
   shell = Shell.cd(d)
   string = String.new
   shell.transact do
     string = shell.grep("-l", "PATTERN", "*")  # => the '*' is not 
expanded;
                                                                   # 
grep: *: No such file or directory
   end
   array = string.split
   array.each { |e| File.move(e, "DIRECTORY") }
end

The above does not work. Does anyone have any insight (or alternate 
ways to accomplish the same purpose in Ruby)?

Thank you.

Regards,

Mark