About Linux System Administration Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991, by Linus Torvalds. Linux is typically packaged in a Linux distribution. Ethical Hacking The term “white hat” in Internet slang refers to an ethical computer hacker, or a computer security expert, who specializes in penetration testing and in other testing methodologies that ensures the security of an organization’s information systems. CompTIA The Computing Technology Industry Association, is a non-profit trade association, issuing professional certifications for the information technology industry. It is
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