ULTRIX-32 Programmer's Manual Sections 2, 3, 5 and 7

This document is the ULTRIX-32™ Programmer's Manual, Sections 2, 3, 5, and 7, published by Digital Equipment Corporation in May 1984. It is designed for programmers working with the ULTRIX-32 operating system, which is noted as being derived from the Fourth Berkeley Software Distribution (4.2BSD).

The manual is structured with entries following a consistent UNIX-style "man page" format, including sections like NAME, SYNTAX, DESCRIPTION, DIAGNOSTICS, FILES, RESTRICTIONS, and SEE ALSO.

The four sections covered in this specific volume are:

• Section 2 (System Calls): Documents the system calls (functions that provide direct interaction with the operating system kernel) and their associated error numbers.
• Section 3 (Subroutines): Covers various library subroutines, including standard C library functions, mathematical functions, internet network functions, and compatibility routines.
• Section 5 (File Formats and Conventions): Describes the structures and conventions for various system files and output files, such as executable (a.out), disk description (disktab), and user account (passwd) file formats.
• Section 7 (Macro Packages and Language Conventions): Provides miscellaneous useful information, including the ASCII character set, user environment details, file system hierarchy, and text processing macro packages.

A recurring note throughout the manual's entries indicates that many of the documented functions and features were "currently is not supported by Digital Equipment Corporation" at the time of this publication.