I'm not opposed to the main concept of what you are referring to. However, I would like to point out that the blog post that you provided a link to is not fully OS agnostic. As someone who works primarily in Windows, the specific examples of using watch and a Vim plugin doesn't apply to the situation of using a Windows system and using only native tools. But I'll try to remember those specific tips the next time that I'm trying to write some Perl code while on a Linux system.

Personally, I've been using Padre, which does some syntax checking as I'm typing code. That mostly achieves the same effect - as long I'm paying attention to what Padre is trying to tell me.

The main feedback that I would offer is that it's my opinion that it would be better to stick with covering a general concept when trying to give advice to "everyone" rather than only covering an OS or tool specific implementation of the general concept. Otherwise, it's easy for those who don't use that specific OS and/or tool to simply ignore the advice based on the assumption that it doesn't apply to them.