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New Features of MPE/iX: Using the Hierarchical File System: 300 MPE/iX Computer Systems
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HP Part Number: 32650-90492

Edition 2

Printed in U.S.A. 1994

Table of Contents

Preface
1 What's New on MPE/iX: Tutorial
Summary of New Features
Hierarchical file system (HFS)
HFS file names
HFS syntax
New commands
Enhanced commands
Symbolic Links
Before You Start
Log on to the system
Find out which release you're running
Create a file to work with
Learning by Doing
Use the HFS syntax
List the file
Create a directory
List the directories
List directories another way
Move to the directory
Move back to your logon group
Move to DIR2
Create a subdirectory
List the subdirectory
Move to the subdirectory
Show where you are
Change your prompt to show the current working directory
Create a file with a long file name
List files and directories in your CWD
Delete a directory
Learn about absolute and relative pathnames
Try a few more LISTFILE commands
List sets of objects on the system
Search for files
System Management Tasks
Create a directory under root
Security and directories
Check directory permissions
Change directory permissions
Move to a directory under root
Report disk usage
Back up all files and directories
2 What's New: Overview
Introducing a New Open Systems Environment
What's POSIX?
How does POSIX change MPE/iX?
What does POSIX offer you?
Postponing the use of POSIX features
Hierarchical File System (HFS)
MPE/iX file system
MPE/iX hierarchical file system
Expanded File Naming Syntax
MPE syntax
HFS syntax
New File Types
Byte-Stream Files
Symbolic Links on MPE/iX
Pipes
FIFOs
New and Enhanced Commands
New commands
Enhanced commands
Enhanced Intrinsics
System-Provided UDCs
New and Enhanced Utilities
New utility: PXUTIL
New backdating tool
Utility enhancements
Computer-Based Training
MPE/iX Shell and Utilities
MPE/iX Developer's Kit
3 What's New for System Administrators?
System Management Considerations
POSIX Computer-Based Training
Expanded Search Capabilities
Backup and Restore
UDCs, JCL, Command Files, and Programs
HFS Directories and High-Availability Products
Accounting
Applications
POSIX-Compliant Applications
Postponing POSIX
User and Group IDs
File Ownership
User and Group Databases
MPE/iX Security Components
Access control definitions
Access modes
Capabilities
Lockwords
Restricting Access to /tmp
Creating files and directories
Renaming files and directories
Deleting files or directories
Backdating
4 What's New for Programmers?
Summary of New and Enhanced Features
New features
Enhanced features
Hierarchical Directory Files
The traditional MPE directory structure
MPE/iX hierarchical directory structure features
Hierarchical directory files
Creating a hierarchical directory
The dot (.) and dot-dot (..) directories
Opening a hierarchical directory
Getting hierarchical directory information
Closing or purging a hierarchical directory
New File Types
Symbolic Links
Pipes
FIFOs
MPE/iX Byte-Stream Files
Renaming a File
Enhancements to MPE/iX File System Security Features
Object ownership
Sharing objects
Closing a File
Closing shared files
Closing directory files
Listing File Information
Terminating File Name Strings
Accessing a File by Its File Name
Enhanced intrinsic parameters
Special enhancements to HPFOPEN
Restricted intrinsic parameters
5 Managing Accounts, Groups, and Users
Background
Setting Up Group and User Databases
Group ID
User ID
Maintaining the group and user databases
PXUTIL
Setting Up Accounts and Adding Users
Setting up accounts
Adding users
6 Managing Directories
What Is a Directory?
Pathnames
Access to Directories
Creating and Naming Directories
Conventions for naming directories
Security when creating directories
Creating directories in your current working directory
Creating directories in another group
Listing Directories
Listing Files in Directories
Deleting Directories
Deleting empty directories
Deleting directories that are not empty
Deleting using wildcards
Changing Your Current Working Directory
Showing Your Current Working Directory
Listing Space Used by Directories
Using Symbolic Links
Creating symbolic links
Deleting symbolic links
Renaming symbolic links
Archiving symbolic links
7 Managing Files
MPE/iX File Naming Conventions
Byte-Stream Files
Editing byte-stream files
Editing byte-stream files using the vi editor
Creating Files with HFS Syntax
Renaming Files
Listing Files
Displaying File Contents
File Equations and UDCs
Volume Set Usage
Determining File Types
Copying Files
Copying a file from an account to a directory
Copying a file from a directory to an account
Copying a file from one directory to another
Deleting Files
Storing Files
Using Symbolic Links
Creating symbolic links
Deleting symbolic links
Renaming symbolic links
Archiving symbolic links
8 Backing Up and Recovering MPE/iX
Backing Up MPE/iX Files
File name mapping for full backups
Specifying MPE/iX files
Backing up the file system
Additional backup examples
Storing old files
What gets stored
Storing of Symbolic Links
Restoring MPE/iX Files
What Gets Restored
Reloading Hierarchical Directories
9 Handling Security on MPE/iX
User Identification
Access Control Definitions (ACDs)
What is an ACD?
Access modes
User specifications
Required ACDs
How do ACDs work
ACD examples
Controlling access to files and directories
Object creation
Object deletion
File renaming
File owner
SAVE access in MPE groups
CWD and file security
Appropriate Privilege
System manager capability
Account manager capability
Execute (X) Access
Tasks Involving System Security
Listing ACDs for files and directories
Changing access to files and directories
GLOSSARY
Index

List of Figures

1-1 MPE/iX File System Example
1-2 Location of the File That You Created
1-3 Location of the Directories That You Created
1-4 Location after Changing Directories
1-5 Moving Back to Your Logon Group
1-6 Moving to DIR2
2-1 MPE/iX File System (Prior to Release 4.5)
2-2 MPE/iX File System (Release 4.5 and Later)
2-3 HFS Pathname Example
4-1 Enhanced PRINTFILEINFO Display
6-1 Example of Hierarchical Directory Structure
7-1 Example HFS File System

List of Tables

1 Where to Go for Information
1-1 Where Accounts, Groups, Directories, & Files Can Be Located
1-2 Maximum Lengths of Account, Group, Directory, and File Names
1-3 Syntax Summary
2-1 Summary of MPE/iX Programmatic Interface Limits
2-2 Summary of MPE/iX CI Limits
2-3 Native Mode vs Compatibility Mode Filename Lengths
2-4 New MPE/iX Commands
2-5 Enhanced MPE Commands
2-6 System-Provided UDCs
2-7 Utility Enhancements
2-8 Selected MPE/iX Shell Commands
3-1 Examples of Wildcard Resolutions
4-1 Enhanced MPE/iX Intrinsics
4-2 HFS Directory File Attributes and/or Access Options
4-3 Access Attributes of Byte-Stream Files
4-4 Intrinsic Parameter Enhancements
4-5 HPFOPEN Item Number 41
4-6 Restricted Intrinsics
7-1 MPE-Escaped Syntax File Name Resolution Examples
7-2 Resulting Security When Renaming Files
7-3 File and Directory Types
7-4 Resulting Security When Copying Files
8-1 Example File Sets for STORE/RESTORE
9-1 User Categories
   


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