The UNIX Time-Sharing System*

ABSTRACT

UNIXis a general-purpose, multi-user, interactive operating system for the larger Digital Equipment Corporation PDP-11 and the Interdata 8/32 computers. It offers a number of features seldom found even in larger operating systems, including

i

A hierarchical file system incorporating demountable volumes,

ii

Compatible file, device, and inter-process I/O,

iii

The ability to initiate asynchronous processes,

iv

System command language selectable on a per-user basis,

v

Over 100 subsystems including a dozen languages,

vi

High degree of portability.

This paper discusses the nature and implementation of the file system and of the user command interface.

Table of Contents

• 1. INTRODUCTION
• Footnotes