in reply to Beginning Perl for system admins
Your question is, but that is by no means obvious for most Perl questions.
In fact I would hazard a guess that the vast majority of "Perl questions" are not about Perl at all, but about a variety of other subjects of only peripheral relevance, for example:
web server configuration
line endings in text files on different operating systems
BTW, no programming language works "exactly" the same under different operating systems, but Perl comes closer than most.