Never expect your "system" Perl to do anything else but system-related tasks and do not rely upon it for anything else.
Install your own Perl (perlbrew is ideal for this) and use that for your tasks. That way you are sure to have a modern/recent Perl that contains the modules and tools you need.
A program should be light and agile, its subroutines connected like a string of pearls. The spirit and intent of the program should be retained throughout. There should be neither too little or too much, neither needless loops nor useless variables, neither lack of structure nor overwhelming rigidity." - The Tao of Programming, 4.1 - Geoffrey James
My blog: Imperial Deltronics