Well I played a little with the code

$files = ['path1/','path2/','path3/']

$old_home = 'Old_Home'
$sName = 'S_Name'

and changed the FileCopy to

puts "#{$old_home}/#{$sName}", "#{Dir.pwd}/#{element}"

and this is what the output looks like

Old_Home/S_Name /tmp/path1/
Old_Home/S_Name /tmp/path2/
Old_Home/S_Name /tmp/path3/
Old_Home/S_Name /tmp/path1/
Old_Home/S_Name /tmp/path2/
Old_Home/S_Name /tmp/path3/
Old_Home/S_Name /tmp/path1/
Old_Home/S_Name /tmp/path2/
Old_Home/S_Name /tmp/path3/

The code you gave is broken and is not doing what you think it is.