AT&T's UNIX Support Group (USG) transformed into the UNIX System Development Laboratory (USDL), which released System V Release 2 in 1984.
SVR2 added shell functions and the SVID.
SVR2.4 added demand paging, copy-on-write, shared memory, and record and file locking.

The concept of the "porting base" was formalized, and the DEC VAX-11/780 was chosen for this release.
The "porting base" is the so-called original version of a release, from which all porting efforts for other machines emanate.

Educational source licenses for SVR2 were offered by AT&T for US$800 for the first CPU, and $400 for each additional CPU.
A commercial source license was offered for $43,000, with three months of support, and a $16,000 price per additional CPU.

Apple Computer's A/UX operating system was initially based on this release.
SCO XENIX also used SVR2 as its basis.
The first release of HP-UX was also an SVR2 derivative.

Maurice J. Bach's book, The Design of the UNIX Operating System, is the definitive description of the SVR2 kernel.
AT&T's UNIX Support Group (USG) transformed into the UNIX System Development Laboratory (USDL), which released System V Release 2 in 1984. SVR2 added shell functions and the SVID. SVR2.4 added demand paging, copy-on-write, shared memory, and record and file locking.
The concept of the "porting base" was formalized, and the DEC VAX-11/780 was chosen for this release. The "porting base" is the so-called original version of a release, from which all porting efforts for other machines emanate.
Educational source licenses for SVR2 were offered by AT&T for US$800 for the first CPU, and $400 for each additional CPU. A commercial source license was offered for $43,000, with three months of support, and a $16,000 price per additional CPU.
Apple Computer's A/UX operating system was initially based on this release. SCO XENIX also used SVR2 as its basis. The first release of HP-UX was also an SVR2 derivative.
Maurice J. Bach's book, The Design of the UNIX Operating System, is the definitive description of the SVR2 kernel.
UNIX System V