[TUHS] Re: Early supported UNIX manual

[segaloco via TUHS <tuhs@tuhs.org>]

Drat, the origin of SysIII init remains obscure...it's not in PWB 1, now not in USG Issue 2...so either PWB2, USG Issue 3 (or later) or UNIX/TS.....or maybe it's an older CB variant...anywho thank you for the quick response!

- Matt G.

------- Original Message -------
On Thursday, December 22nd, 2022 at 1:44 PM, Phil Budne <phil@ultimate.com> wrote:


> Matt G wrote:
> 
> > One area of immediate curiosity for me is the init system, whether the pages suggest it is more in line with research (rc and ttys files) or TS (inittab, runlevels).
> 
> 
> The init (VII) page mentions /etc/rc and refers to ttys (V) which says the file
> consists of lines with three characters (enable, tty name, getty arg)
> 
> getty (VII) describes behaviors for 0, -, 1, 2
> 
> The one interesting bit in section (II) is lock (system call 62.) that
> implements semaphores with subfunctions lock/unlock/tlock, all of
> which take a non-negative semaphore ID called a flag.