Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
National Initiative for Cybersecurity Careers and Studies
Discover Linux, its origins, distributions, and command line interface for managing a Linux system, as you prepare for the XK0-004: CompTIA Linux+ certification exam.
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