Rather than increase subject drift on a thread I started "UNIX on (not quite bare) System/370", here's a new thread. Since the TUHS archive seems to now include documentation, I decided to take a look and see if the earliest UNIX manual I have is in the archive: It was given to me by a friend at Stevens Tech in Hoboken NJ (c. 1980) who had graduated, and worked for AT&T. It's hole punched for a four ring binder (I found an unused Bell System Project Telstar binder to put it in). The cover page has: Upper left corner: Bell Telephone Laboratories Incorperated PROGRAM APPLICATION INSTRUCTION Upper right corner: PA-1C300-01 Section 1 Issue 1, January 1976 AT&TCo SPCS Center: UNIX PROGRAMMER'S MANUAL Program Generic PG-1C300 Issue 2 Published by the UNIX Support Group January, 1976 The preface starts with: This document is published as part of the UNIX Operating System Program Generic, PG-1C300 Issue 2. The development of the Program Generic is the result of the efforts of the members of the UNIX Support Group, supervised by J.F. Maranzano and composed of: R. B. Brant, J. Feder, C. D. Perez. T. M. Raleigh, R. E. Swift, G. C. Vogel and I. A. Winheim. and ends with For corrections and comments please contact C. D. Perez, MH 2C-423, Extension 6041. Not knowing who else I could ask, I brought it to a Boston Usenix (in the 90's or oughts), and asked DMR if he could identify it. He said it was an early supported UNIX, and he signed the preface page for me. The manual has sections I through VIII; all manual pages start with page -1- I found https://www.tuhs.org/Archive/Distributions/USDL/unix_program_description_ja… with cover page: UNIX PROGRAM DESCRIPTION Program Generic PG-1C300 Issue 2 Published by the UNIX Support Group January 1976 contents: NUMBER ISSUE TITLE PD-1C301-01 1 Operating System PD-1C302-01 1 Device Drivers Section 1 PD-1C303-01 1 Device Drivers Section 2 And consists of descriptions of kernel functions. So it seems likely that my manual is a companion to that. I have a Brother printer/scanner, but the paper is fragile, so unless it's of immediate and burning value to someone, it's unlikely to rise to the top of my ever-static list of documents to scan.... But if someone has specific questions I can look up, let me know....

Matt G wrote: 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.

Matt G wrote: 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.

Your reference to sema(2) in CB-UNIX prompted me to go check the source and curiously, that isn't in sysent.c: https://www.tuhs.org/Archive/Distributions/USDL/CB_Unix/SourceCode/cbunix6.… (p. 50). However, there is a sys5.c with some semaphore stuff in it. Not how the code gets from the sigcall entry to that file, maybe there's a CB-specific syscall aggregator like the sys3b systemcall for 3B20-specific stuff. It had never actually occurred to me that the semaphores in SVR1 weren't the ones from CB-UNIX, I thought they just forklifted all the IPC into 4.0 from CB. That then means the semaphores that carried through in System V originated at least in UNIX/TS 4.0, but not by way of CB. Minor trivia, but that's news to me. Maybe the sysV modification request logs can shed some light, I remember seeing several IPC mentions in there. - Matt G.

now available on bitsavers thanks to Al Kossow: https://bitsavers.org/pdf/att/unix/6th_Edition/

Not that I can tell you an easy name for what to call it!