Sorry to tell you to RTFM, but little obstacles like this will be WAY easier to deal with if you just commit some time to learning the basics. I’d recommend linuxjourney.com, if you take the time to fully understand everything there you will know more than 99% of people here about this stuff
Because companies like Apple, Google, etc. treat their engineers extremely well in order to attract the best talent. Why unionize if you’re payed a ton of money, have unlimited PTO and work in a very casual office environment (or from home)?
I am studying for the RHCSA as well and this is what I’m going with. Make sure you look into O’Reilly Learning. It’s $50 a month vs buying the course from Pearson for like $350.
I can highly recommend linux journey!
I’d just like to interject for a moment. What you’re refering to as Linux, is in fact, GNU/Linux, or as I’ve recently taken to calling it, GNU plus Linux. Linux is not an operating system unto itself, but rather another free component of a fully functioning GNU system made useful by the GNU corelibs, shell utilities and vital system components comprising a full OS as defined by POSIX.
Many computer users run a modified version of the GNU system every day, without realizing it. Through a peculiar turn of events, the version of GNU which is widely used today is often called Linux, and many of its users are not aware that it is basically the GNU system, developed by the GNU Project.
There really is a Linux, and these people are using it, but it is just a part of the system they use. Linux is the kernel: the program in the system that allocates the machine’s resources to the other programs that you run. The kernel is an essential part of an operating system, but useless by itself; it can only function in the context of a complete operating system. Linux is normally used in combination with the GNU operating system: the whole system is basically GNU with Linux added, or GNU/Linux. All the so-called Linux distributions are really distributions of GNU/Linux!