[CentOS] Job opportunities for Linux. [OT]

I am currently into Engineering, and I am working slowly on my Knowledge / Know-How of Linux. I am eager to know about the Job Opportunities for people who have considerably good knowledge in Linux. This thought has popped up in my mind, due to the reason that I was watching out my Local LUG, and somebody quoted like..."There aren't much Job Opportunities for Linux Knowledge compared to the Knowledge based on Microsoft Software. Linux won't fetch you those fat salaries that Microsoft would offer, so unfortunately, you don't get what you deserve, with Linux, as the basic concept lies in Free Stuff."