Linux people are problem solvers

Linux people are problem solvers. A typical linux power user can put together a small server, get a dedicated Internet pipe with a static IP address into her home, register a domain name, and build a server on the Internet.

what system administration is

"System administration books used to be fairly predictable. they showed you how to manage users, filesystems, devices, processes, printers, networks and so on. They did not tell you what to do when new problems emerged. If your web site became popular, you had to learn quickly about proxy servers, different levels of caching, load balancing, distributed authentication and other complex issues. If you added a database, you soon needed to scale it and learn to avoid SQL injection attacks. Overnight, sites become mission critical, and you needed the ability to make hot backups on 24x7 systems."

Linux system administration/Tom Adelstein and Bill Lubanovic

linux reach

Linux probaly has the broadest reach of any operating system, from tiny systems to phony jacks, to cell phones, to supercomputer clusters bigger than your high school. It has infiltrated the fields of telecommunications, embedded systems, satellites, medical equipment, military systems, computer graphics, and - last but not least - desktop computing.

Linux system administration/Tom Adelstein and Bill Lubanovic