freebsd is not a Linux system, but a UNIX-like operating system. It is an important branch of Unix developed through BSD, 386BSD and 4.4BSD; FreeBSD provides different levels of support for computer systems of different architectures. .
The operating environment of this tutorial: freebsd13.1 system, Dell G3 computer.
Is freebsd a linux system?
no.
FreeBSD is a UNIX-like operating system, an important branch of Unix developed through BSD, 386BSD and 4.4BSD. FreeBSD provides varying levels of support for computer systems of different architectures. And some of the original BSD UNIX developers later switched to FreeBSD development, making FreeBSD highly compatible with UNIX in terms of internal structure and system API. Due to FreeBSD's loose legal terms, its code has been borrowed by many other systems, including Apple's macOS. It is precisely because of macOS's UNIX compatibility that macOS has obtained the UNIX trademark certification.
FreeBSD supports amd64 (x86_64), .
Development History
The development of FreeBSD began in 1993 and originated from 386BSD. However, due to the legitimacy of the 386BSD source code being questioned and the successive lawsuits between Novell (the copyright holder of UNIX at the time) and Berkeley, FreeBSD released 2.0-RELEASE in January 1995 as the University of California's 4.4BSD-Lite. Release is completely rewritten. There is more history of FreeBSD in the FreeBSD Manual.
Perhaps the most noteworthy aspects of FreeBSD 2.0 are the overhaul of Carnegie Mellon University's Mach Virtual Memory system and the invention of the FreeBSD Ports system. The former is optimized for high-load systems, while the latter establishes a simple and powerful mechanism to maintain third-party software. Many large sites use FreeBSD, but many companies are turning to the Linux platform, and many VPS (virtual personal hosts) also provide FreeBSD space.
FreeBSD 3.0 introduced the ELF binary format and began to support multi-CPU systems (SMP, Symmetric multiprocessing) and 64-bit Alpha platforms. 3.x made a lot of reforms to the system. These measures did not bring benefits at the time, but they were the cornerstone of the success of 4.X.
Note: UNIX is a multi-user and multi-tasking operating system, and Linux is an operating system based on UNIX.
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