def mv(src, dest, options = {})
    fu_check_options options, OPT_TABLE['mv']
    fu_output_message "mv#{options[:force] ? ' -f' : ''} #{[src,dest].flatten.join ' '}" if options[:verbose]
    return if options[:noop]
    fu_each_src_dest(src, dest) do |s, d|
      destent = Entry_.new(d, nil, true)
      begin
        if destent.exist?
          if destent.directory?
            raise Errno::EEXIST, dest
          else
            destent.remove_file if rename_cannot_overwrite_file?
          end
        end
        begin
          File.rename s, d
        rescue *MV_RESCUES
          copy_entry s, d, true
          if options[:secure]
            remove_entry_secure s, options[:force]
          else
            remove_entry s, options[:force]
          end
        end
      rescue SystemCallError
        raise unless options[:force]
      end
    end
  end
Options: force noop verbose

Moves file(s) +src+ to +dest+.  If +file+ and +dest+ exist on the different
disk partition, the file is copied then the original file is removed.

FileUtils.mv 'badname.rb', 'goodname.rb'
FileUtils.mv 'stuff.rb', '/notexist/lib/ruby', :force => true  # no error

FileUtils.mv %w(junk.txt dust.txt), '/home/aamine/.trash/'
FileUtils.mv Dir.glob('test*.rb'), 'test', :noop => true, :verbose => true