> Nope, unix people like the fact that thirty-year-old shell scripts still work just fine. No, they don't. Because even if a Unix from 30 years ago still does

> Nope, unix people like the fact that thirty-year-old shell scripts still work just fine. No, they don't. Because even if a Unix from 30 years ago still does exist (Solaris and Aix) it and the programs used with it changed that much that almost all scripts are unusable by now. And the used shells (Korn shell anyone?) and the shells themselves changed too. Same with Linux, it changed that much during the last 10 years, that almost any script had to be rewritten.