即将推出的 FreeBSD 12.0 的首个 RC 版现已发布！FreeBSD 是类 UNIX 操作系统，它基于加州伯克利大学的“4.4BSD-Lite”发行并带有一些“4.4BSD-Lite2”增强，面向 i386、amd64、IA-64、arm、MIPS、powerpc、ppc64、PC-98、UltraSPARC 等平台。它还间接地基于“386BSD”，此乃 William Jolitz 对加州伯克利大学的“Net/2”往 i386 系统上的移植，尽管如今只有极少的代码保留下来。
下载地址：
https://www.freebsd.org/where.html#helptest
自 12.0-BETA4 以来的更改主要包括：
NFSv4 ACL inheritance flags are no longer set on non-directories;
new keywords, enable, disable and delete, were added to rc(8);
fix freebsd32 mknod(at);
fix some problems that manifest when NUMA domain 0 is empty;
the ctm(1) utility has been marked as deprecated;
the amdsmn(4) and amdtemp(4) drivers has been updated to attach to Ryzen 2 hostbridges;
the amdtemp(4) driver temperature reporting on AMD 2990WX has been fixed;
printing of 64-bit counters on 32-bit powerpc platforms has been fixed;
fixes to netmap(4) support with vtnet(4);
handling of allow.mount.fusefs in jailparam_init() has been fixed;
miscellaneous IPv6 fixes;
various other miscellaneous fixes
FreeBSD 被全世界的公司、因特网服务提供商、科研人员、计算机专家、学生、家庭用户等用于他们的工作、教育、娱乐中。FreeBSD 带有 20000 多个软件包，它们是预编译和打包好了、便于安装的软件，并覆盖了广阔的应用领域：服务器软件、数据库和网页服务器、桌面软件、游戏、网络浏览器和商务软件，而这一切都是免费和易于安装的。
