Pity they seem to think that Perl is "UNIX based"
Manipulation of text files, among the many other uses of this versatile Unix-based programming language, keep Perl a hot skill for systems administrators, network coders and database access.
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