From: Curt Hibbs <curt@...>
Date: 2004-03-16T14:24:39+09:00
Subject: How can I copy a read-only file?

I've got a generic method that copies files. I want to preserve the
attributes of the source file in the destination file. I started using this:

   require "ftools"
   ...
   File.copy(src_file, dest_dir)

This works until I encounter a read-only file, then I get an exception:

   c:/ruby/lib/ruby/1.8/ftools.rb:23:in `initialize':
   Permission denied - E:\Dev\RubyDev\rubyinstaller\c
   vs-repo\installer\stable/doc\DBD/ODBC-0.96/COPYING
   (Errno::EACCES)

So I tried switching to FileUtils.cp, and got the same error. I also trued
this:

   FileUtils.chmod( 0644, src_file)
   FileUtils.cp(src_file, dest_dir)

But still it still doesn't work -- I get the same error:

   c:/ruby/lib/ruby/1.8/fileutils.rb:409:in `initialize':
   Permission denied - E:\Dev\RubyDev\rubyinstaller\cvs-r
   epo\installer\stable/doc\DBD/ODBC-0.96/COPYING (Errno:
   :EACCES)

So, how do you copy read-only files in ruby?

Curt