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by xenophonf
1704 days ago
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FreeBSD _is_ a Unix, being derived from the BSD Net-2 release in the early 1990s. GNU and Linux distributions are actually Unix clones, with different distributions mimicking or incorporating code from the various open source and proprietary Unix operating systems. For example, Slackware used to use an rc-style init system like BSD. Linux cgroups (underlying tech like Docker) look very much like Solaris zones. GNU coreutils have POSIX compatibility modes. Systemd looks a lot like Solaris SMF. Stuff like ZFS and DTrace were imported from OpenSolaris. And so on. |
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That's a common misconception. It's as much of a UNIX as Linux is (see the AT&T lawsuit).