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FreeBSD, Linux's close cousin, is a Unix-like system that shares many of the same applications. The main difference is that much of FreeBSD is released under a permissive license, while most of Linux is released under a share-alike license. As you use FreeBSD, you will also discover differences in the directory hierarchy, device names, and other system details. FreeBSD, the most popular member of the so-called BSD family, is also related to NetBSD, DragonFly BSD, and OpenBSD.

Unlike Linux, FreeBSD develops not only its kernel, but also its own utilities and hardware devices. Consequently, most of its release notes are more technical than those of a typical Linux distribution, detailing new functions, options, and hardware support, rather than new application features or desktop cosmetics. See https://www.freebsd.org/releases/13.1R/relnotes/ for more information.

FreeBSD is more likely to appeal to expert Linux users, who can appreciate its unique structure and way of doing things. However, for anyone who wonders what lies behind the much bandied expression "Unix-like operating systems," installing FreeBSD is an ideal way to satisfy you curiosity.

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