As said in the chat, if you need to modify the text dumped to the file adding some given **text**, probably you need to do it by hand:
open a file to write to, cycle on (sorted?) keys of such hash and print what you had to print to file.
L*
There are no rules, there are no thumbs..
Reinvent the wheel, then learn The Wheel; may be one day you reinvent one of THE WHEELS.