I suppose people blindly following suggestions on the Internet will eventually learn a hard lesson -- don't.
Corollary: Learn to RTFM.
Unless you've went out of your way to avoiding installing the documentation (man pages, etc.), all the answers you need (well, most of them) are right there on your own system.
Fortunately, developers are never put under unreasonable deadlines while being evaluated by how many JIRA tickets they close and instead are always given as much time as they need to ensure that they understand all the nuances of the entire stack all the way down to the subtle behaviors of the operating system.
Corollary: Learn to RTFM.
Unless you've went out of your way to avoiding installing the documentation (man pages, etc.), all the answers you need (well, most of them) are right there on your own system.