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I’m unfamiliar with illumos so I went to their webpage and the very first thing it says is: > illumos is a Unix operating system Is illumos an actual Unix (li

I’m unfamiliar with illumos so I went to their webpage and the very first thing it says is: > illumos is a Unix operating system Is illumos an actual Unix (like macOS) or a Unix-like OS (like GNU/Linux)?

chucky_z 3y ago
Actual Unix. I believe it is in the Solaris family.
deleted 3y ago
[deleted]
steveklabnik 3y ago
Actual Unix. Wikipedia is pretty good: https://en.wikipedia.org/wiki/Illumos https://en.wikipedia.org/wiki/Illumos > It is based on OpenSolaris, which was based on System V Release 4 (SVR4) and the Berkeley Software Distribution (BSD). Illumos comprises a kernel, device drivers, system libraries, and utility software for system administration. This core is now the base for many different open-sourced Illumos distributions, in a similar way in which the Linux kernel is used in different Linux distributions.
Thoreandan 3y ago
Nobody's paid to have it pass Open Group Unix Branding certification tests https://www.opengroup.org/openbrand/register/ https://www.opengroup.org/openbrand/register/ so it can't use the UNIX™ trade mark. But it's got the AT&T Unix kernel & userland sources contained in it. PDP-11 Unix System III: https://www.tuhs.org/cgi-bin/utree.pl?file=SysIII/usr/src/uts/pdp11/os/main.c https://www.tuhs.org/cgi-bin/utree.pl?file=SysIII/usr/src/ut... IllumOS: https://github.com/illumos/illumos-gate/blob/b8169dedfa435c059cef6fd836f19b9f1fb7d099/usr/src/uts/common/os/main.c#L122 https://github.com/illumos/illumos-gate/blob/b8169dedfa435c0...
BirAdam 3y ago
It was an open source branch of Solaris that Ian Murdock worked on while he was at Sun under the name Project Indiana. It descends from UNIX SVR4.
msla 3y ago
Legally, NetBSD isn't actually Unix. The brand doesn't mean what people seem to think it means.
- yjftsjthsd-h 3y ago
  Right, "unix" roughly means - Derived from Bell Labs unix source - Legally allowed to use the UNIX trademark (AKA certified Unix) - A unix-shaped OS (similar but not 100% the same as POSIX complacence) and those things are basically independent. Most GNU/Linux are unix-likes but not derived from original unix code or certified, but there's been 1-2 that did get certified. The BSDs are (now quite distantly ) derived from unix source but not certified (although ex. UnixWare is IIRC). Solaris was all 3 but OpenSolaris and now illumos are obviously unix-like and still based on the original code but not certified UNIX™. (Take all this with a grain of salt; I'm typing this all from memory and IANAL)
- GrilledChips 3y ago
  This isn't NetBSD. NetBSD broke off loooooooong after the release of BSD that Sun used to build this OS.

chucky_z 3y ago

Actual Unix. I believe it is in the Solaris family.

deleted 3y ago

[deleted]

steveklabnik 3y ago

Actual Unix. Wikipedia is pretty good: https://en.wikipedia.org/wiki/Illumos https://en.wikipedia.org/wiki/Illumos > It is based on OpenSolaris, which was based on System V Release 4 (SVR4) and the Berkeley Software Distribution (BSD). Illumos comprises a kernel, device drivers, system libraries, and utility software for system administration. This core is now the base for many different open-sourced Illumos distributions, in a similar way in which the Linux kernel is used in different Linux distributions.

Thoreandan 3y ago

Nobody's paid to have it pass Open Group Unix Branding certification tests https://www.opengroup.org/openbrand/register/ https://www.opengroup.org/openbrand/register/ so it can't use the UNIX™ trade mark. But it's got the AT&T Unix kernel & userland sources contained in it. PDP-11 Unix System III: https://www.tuhs.org/cgi-bin/utree.pl?file=SysIII/usr/src/uts/pdp11/os/main.c https://www.tuhs.org/cgi-bin/utree.pl?file=SysIII/usr/src/ut... IllumOS: https://github.com/illumos/illumos-gate/blob/b8169dedfa435c059cef6fd836f19b9f1fb7d099/usr/src/uts/common/os/main.c#L122 https://github.com/illumos/illumos-gate/blob/b8169dedfa435c0...

BirAdam 3y ago

It was an open source branch of Solaris that Ian Murdock worked on while he was at Sun under the name Project Indiana. It descends from UNIX SVR4.

msla 3y ago

Legally, NetBSD isn't actually Unix. The brand doesn't mean what people seem to think it means.

yjftsjthsd-h 3y ago
Right, "unix" roughly means - Derived from Bell Labs unix source - Legally allowed to use the UNIX trademark (AKA certified Unix) - A unix-shaped OS (similar but not 100% the same as POSIX complacence) and those things are basically independent. Most GNU/Linux are unix-likes but not derived from original unix code or certified, but there's been 1-2 that did get certified. The BSDs are (now quite distantly ) derived from unix source but not certified (although ex. UnixWare is IIRC). Solaris was all 3 but OpenSolaris and now illumos are obviously unix-like and still based on the original code but not certified UNIX™. (Take all this with a grain of salt; I'm typing this all from memory and IANAL)
GrilledChips 3y ago
This isn't NetBSD. NetBSD broke off loooooooong after the release of BSD that Sun used to build this OS.