About this Manual

This manual compares the DIGITAL UNIX operating system to the ULTRIX operating system by describing the differences between the two systems. This manual also contains information about software components of the DIGITAL UNIX product.

Note

This manual does not contain information about software components or products that you purchase separately from the DIGITAL UNIX product.

Audience

This manual is written for ULTRIX users, system and network administrators, and programmers who need information about migrating to the DIGITAL UNIX system:

Users should read this manual to determine what differences exist between using an ULTRIX system and using a DIGITAL UNIX system.

System and network administrators should read this manual to determine what differences exist between administering an ULTRIX system and network and a DIGITAL UNIX system and network.

Programmers should read this manual to determine what differences between the ULTRIX programming environment and the DIGITAL UNIX programming environment affect the migration of applications.

Organization

This manual discusses the following topics:

Part I	Introduction
Chapter 1	Is an overview of migration from the ULTRIX operating system to the DIGITAL UNIX operating system.
Part II	Migrating Your User Environment
Chapter 2	Is an overview of the DIGITAL UNIX user environment that describes differences from the ULTRIX environment.
Chapter 3	Describes how to set up your DIGITAL UNIX user environment so that it is similar to your ULTRIX user environment. Also, it describes how to migrate shell scripts from an ULTRIX system to a DIGITAL UNIX system.
Part III	Migrating Your System and Network Administration Environment
Chapter 4	Is an overview of the DIGITAL UNIX system and network administration environment that describes differences from the ULTRIX environment.
Chapter 5	Describes how to set up a DIGITAL UNIX system for maximum compatibility with ULTRIX systems.
Part IV	Migrating Your Applications
Chapter 6	Is an overview of the DIGITAL UNIX programming environment that describes differences from the ULTRIX environment.
Chapter 7	Describes the steps involved in migrating source applications from ULTRIX systems to DIGITAL UNIX systems.
Chapter 8	Describes how to use certain features of DIGITAL UNIX, such as shared libraries.
Part V	Appendixes
Appendix A	Describes differences between DIGITAL UNIX and ULTRIX commands, including how to get the behavior of ULTRIX commands on DIGITAL UNIX systems, where applicable.
Appendix B	Describes differences between DIGITAL UNIX and ULTRIX header files and routines, including how these header file differences affect program portability.
Appendix C	Describes differences between DIGITAL UNIX and ULTRIX system calls, including how to get the behavior of ULTRIX system calls on DIGITAL UNIX systems, where applicable.
Appendix D	Contains three sample programs that show modem control.
Appendix E	Summarizes the differences between XUI and OSF/Motif terminology, windows and window managers, menus and menu items, standard message boxes, and mouse button bindings.
Appendix F	Summarizes the differences between XUI and OSF/Motif component names.
Appendix G	Summarizes issues when migrating from ULTRIX Version 4.5 to DIGITAL UNIX Version 4.0B.

Audience	Icon	Color Code
General users	G	Blue
System and network administrators	S	Red
Programmers	P	Purple
Device driver writers	D	Orange
Reference page users	R	Green

Reader's Comments

DIGITAL welcomes any comments and suggestions you have on this and other DIGITAL UNIX manuals.

You can send your comments in the following ways:

Fax: 603-884-0120 Attn: UBPG Publications, ZKO3-3/Y32

Internet electronic mail: readers_comment@zk3.dec.com
A Reader's Comment form is located on your system in the following location:
```
/usr/doc/readers_comment.txt
```

Mail:
Digital Equipment Corporation
UBPG Publications Manager
ZKO3-3/Y32
110 Spit Brook Road
Nashua, NH 03062-9987

A Reader's Comment form is located in the back of each printed manual. The form is postage paid if you mail it in the United States.

Please include the following information along with your comments:

The full title of the book and the order number. (The order number is printed on the title page of this book and on its back cover.)

The section numbers and page numbers of the information on which you are commenting.

The version of DIGITAL UNIX that you are using.

If known, the type of processor that is running the DIGITAL UNIX software.

The DIGITAL UNIX Publications group cannot respond to system problems or technical support inquiries. Please address technical questions to your local system vendor or to the appropriate DIGITAL technical support office. Information provided with the software media explains how to send problem reports to DIGITAL.

Conventions

% $: A percent sign represents the C shell system prompt. A dollar sign represents the system prompt for the Bourne, Korn, and POSIX shells.
#: A number sign represents the superuser prompt.
% cat: Boldface type in interactive examples indicates typed user input.
file: Italic (slanted) type indicates variable values, placeholders, and function argument names.
[ | ] { | }: In syntax definitions, brackets indicate items that are optional and braces indicate items that are required. Vertical bars separating items inside brackets or braces indicate that you choose one item from among those listed.
colored text: In syntax definitions, literal elements are colored green. Variable values, placeholders, and function argument names are colored red. No special colored text is used outside of syntax descriptions.
cat(1): A cross-reference to a reference page includes the appropriate section number in parentheses. For example, cat(1) indicates that you can find information on the cat command in Section 1 of the reference pages.

About this Manual

Note

Audience

Organization

Related Documents

Reader's Comments

Conventions