3 ms·

Because macOS closest relative isn't Free/NetBSD, but OSF/1 which, under few different names, was sold by Digital as Unix for Alpha (there were few rare builds

by p_l 2y ago

Because macOS closest relative isn't Free/NetBSD, but OSF/1 which, under few different names, was sold by Digital as Unix for Alpha (there were few rare builds for MIPS too).

emmelaich 2y ago
Interesting, I thought MacOS was basically a FreeBSD variant. But I just tried it again on a resized terminal window and I couldn't reproduce it!
- p_l 2y ago
  OSX took in a bit of FreeBSD and NetBSD to modernise sons areas, but the main thing for 10.0 release involved pulling in the latest OSFMK. Also, several APIs introduced after BSD 4.4 are very visibly missing, pointing to how little was taken from Free/NetBSD
skissane 2y ago
> Because macOS closest relative isn't Free/NetBSD, but OSF/1 What you say here contains some truth (certainly with respect to the kernel), but I doubt that has anything to do with the behaviour the grandparent is reporting–the wish command in Tcl/Tk truncating output at terminal width. That behaviour would be determined by the Tcl/Tk code, nothing inherently to do with the underlying OS. > but OSF/1 which, under few different names, was sold by Digital as Unix for Alpha (there were few rare builds for MIPS too). IBM also briefly sold a port of OSF/1 to IBM mainframes, AIX/ESA: it was available to customers in June 1992, and withdrawn from marketing in June 1993–it was discontinued so quickly due to lack of customer interest, and also because IBM was about to release (in 1994) a UNIX compatibility subsystem for MVS (OpenEdition), which was a more attractive UNIX option for many of their mainframe customers. I believe IBM's abortive Workplace OS – shipped in beta form only as OS/2 PowerPC Edition – was also partially derived from the OSF/1 code base.
- p_l 2y ago
  I believe the Workplace OS connection was related to the use of Mach microkernel. I knew IBM was looking into at least one use of OSF/1 as shipped Unix, but wasn't sure which one (and AIX by middle 1990s was weird enough to confuse most people...)

by p_l 2y ago

Because macOS closest relative isn't Free/NetBSD, but OSF/1 which, under few different names, was sold by Digital as Unix for Alpha (there were few rare builds for MIPS too).

emmelaich 2y ago

Interesting, I thought MacOS was basically a FreeBSD variant. But I just tried it again on a resized terminal window and I couldn't reproduce it!

p_l 2y ago
OSX took in a bit of FreeBSD and NetBSD to modernise sons areas, but the main thing for 10.0 release involved pulling in the latest OSFMK. Also, several APIs introduced after BSD 4.4 are very visibly missing, pointing to how little was taken from Free/NetBSD

skissane 2y ago

> Because macOS closest relative isn't Free/NetBSD, but OSF/1 What you say here contains some truth (certainly with respect to the kernel), but I doubt that has anything to do with the behaviour the grandparent is reporting–the wish command in Tcl/Tk truncating output at terminal width. That behaviour would be determined by the Tcl/Tk code, nothing inherently to do with the underlying OS. > but OSF/1 which, under few different names, was sold by Digital as Unix for Alpha (there were few rare builds for MIPS too). IBM also briefly sold a port of OSF/1 to IBM mainframes, AIX/ESA: it was available to customers in June 1992, and withdrawn from marketing in June 1993–it was discontinued so quickly due to lack of customer interest, and also because IBM was about to release (in 1994) a UNIX compatibility subsystem for MVS (OpenEdition), which was a more attractive UNIX option for many of their mainframe customers. I believe IBM's abortive Workplace OS – shipped in beta form only as OS/2 PowerPC Edition – was also partially derived from the OSF/1 code base.

p_l 2y ago
I believe the Workplace OS connection was related to the use of Mach microkernel. I knew IBM was looking into at least one use of OSF/1 as shipped Unix, but wasn't sure which one (and AIX by middle 1990s was weird enough to confuse most people...)