The official guide to what's "on-topic" is burred in the confusing mess SE calls the "help center" (sorry SE, I know you were trying, but the HC is so much worse than the FAQ ever was).
From http://serverfault.com/help/on-topichttps://serverfault.com/help/on-topic
Server Fault is a site for system and network administrators needing expert answers related to managing computer systems in a professional capacity.
If your question is about…
- Server and Workstation operating systems, hardware, and software.
- Business/Enterprise grade virtualization
- Enterprise storage, backup, and disaster recovery
- Network routing, switches, and firewalls
- Operations, maintenance, and monitoring
and it is not about…
- Anything in a home or development environment
- Product, service, or learning material recommendations
- Career, salary, personnel, employment, or formal education
- Licensing, legal advice, and circumvention of security or policy
- Unauthorized hacking, password cracking, or system misuse
But that topicality is defined only within our target audience, mainly that first line with a link to a lengthy discussion of what "professional capacity" means. To sum it up quickly, it is someone being paid to maintain these on-topic systems in a supportable manor with the intention of ongoing operations.
Addressing some of your questions directly:
- The Environmental variables thing is a novice question, better suited to unix.SE
- The FAT vs NTFS question shows absolutely no research on your part. A quick Google brings up the comparison that Hopeless linked to. There's a blue pane to the right when asking a question, trying to give advice like
Provide details. Share your research. - While about a quarter of the site's Answers come form a core continent of highly competent people, the majority come from random people who wouldn't even be considered regulars. Put a touch of effort into it and you'll be really surprised at how quickly you can find a question you already know something about.
