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Contents
Contents
Unix Systems Administration
Alvin J. Alexander
DevDaily.com
Copyright 2003 DevDaily.com.
All Rights Reserved.
Contents
Why UNIX ?
Introduction
UNIX - What Is It?
UNIX is an operating system for computers
Why UNIX ?
UNIX is "multi-tasking"
Thousands of Business Applications
UNIX is "portable"
UNIX is "scalable"
UNIX systems are "Open"
UNIX Offers a Robust Programming Environment
Built-In TCP/IP Networking
Industry-Standard X-Windows and Motif GUI
History of the UNIX Operating System
How it started (MULTICS, C - 1970's)
Important Concepts Necessary to Understanding UNIX
Hierarchical File System
Virtual Memory
UNIX Shells
Multi-user
Multi-processing
The "root" User
Summary
The UNIX Editor - vi
Introduction
The "vi" Editor
Key Points to Remember about vi
The Three Modes of vi
Opening a File For Editing
Leaving Your "vi" Session
Command Description
Exercise: Opening a File With "vi"
Entering Text Into A File
Command Description
Exercise: Inserting Text With "vi"
Deleting Text With "vi"
Command Description
Searching For Text
Command Description
Undoing Your Last Action
Command Description
Summary
The Login Process
Introduction
Typical Tasks a User Will Perform
Logging In - As a "Typical" User
The Standard Login Prompt
Logging In - Entering Your Username and Password
Exercise: Logging in to the classroom computer.
Message of The Day
The "Menu"
Logging In - Without Seeing a Menu
Your Prompt
The Login Process
Exercise: Examining the "login" files.
Notes
Summary
Fundamentals of TCP/IP Networking
Introduction
Objectives
TCP/IP Facts and Background
Overview
What is TCP/IP?
Managing Print Services
Introduction
Objectives
Print Service Overview
Print System Terminology
Print System Configurations
The Print Spooler System
Print Service Administration
Adding a Parallel Printer to a Unix System
SCO Unix 3.2.4.2
Sending test data to a printer
SCO OpenServer 5.x
Lab Exercise
Adding a Serial Printer to a Unix System
SCO Unix 3.2.4.2
Installing a serial printer on SCO OpenServer 5.x
Lab Exercise:
Adding a Network Printer to an SCO Unix System
Adding a network printer to an SCO Unix 3.2.4.2 system
Configuring an SCO OpenServer 5 system as a TCP/IP Print Server
Configuring an SCO OpenServer 5 system to print to another OpenServer 5 system over a TCP/IP network
Lab Exercise
Print Service system files and directories
Contents of /usr/spool/lp on an OpenServer 5.x system, with a printer named "Sales" defined:
Location of the printer interface script
Location of configuration files for the "Sales" printer
Temporary files created during the printing process:
/usr/spool/lp/requests Directory
/usr/spool/lp/temp Directory
Merged request log - /usr/spool/lp/logs/requests
Exercise
Managing a printer queue
Print service commands for end-users
Commands used to manage the printer system
Commands and files for Network printers (SCO OpenServer 5.x)
Printing
Pipeline uses of the "lp" command
Checking the Status of Print Requests
"lpstat" examples
Interpreting The Output of "lpstat"
Viewing "lpstat" output when there are other users printing
lpstat
Examples
Cancelling Print Requests
Shutting down the scheduler
Starting the line printer daemon
lpsched
Examples
Administering the print service
lpadmin
Examples
Enabling a print spooler
enable
Examples
Disabling a print spooler
Rejecting print requests
Accepting print requests
accept
Examples
Moving print requests from one queue to another
lpmove
Examples
Putting a request on hold
lp
Examples
Troubleshooting Printing Problems
Troubleshooting - tricks of the trade for support centers
Print Services - Final Exam
Shutting Down and Booting Up
Introduction
Shutting Down a UNIX Computer System
The 'shutdown' Command and the Proper Shutdown Procedure
The Proper Shutdown Procedure
Booting Up a UNIX Computer System
The Boot-Up Process
The Proper Boot-Up Procedure
Summary
Tapes, Tape Drives, and Backups
Introduction
Backup Strategy
Creating a Backup Strategy
Summary of Key Questions to Ask Regarding Tape Backup Strategy
Backup Commands
Using "tar" For System Backups
Using the SCO "sysadmsh" For System Backups
Emergency Boot Diskettes
Summary
FAQ’s - Frequently Asked Questions
Introduction
Frequently Asked Questions
"I need to cancel a print job. Can I do this?"
"Can I add a new user account to the system?"
"A user forgot their password. Can I change it?"
"A terminal appears to be locked up. What can I do?"
Clearing Up a Locked Terminal When the Terminal Device is Known
Clearing Up a Locked Terminal When Only the Username is Known
"I’ve lost a file on the system. How can I find it?"
"I want to copy some files to an MS-DOS computer system. Can I do that?"
Installing the The Apache Web Server
Introduction
Prerequisites
Objectives
Contents
Overview
What is the Apache web server?
Installing the Apache software
Pre-Installation Checklist
Locating the Apache software for SCO Unix systems
Installing the Apache-1.3.0-VOLS.tar package from SCO
The Apache Directory Structure
Configuring the Apache Software
The Apache Directory Structure
Apache "Directives"
Configuring the httpd.conf file
Configuring the access.conf file
Configuring the srm.conf file
Testing the Apache Installation
Starting the Apache Server
Accessing the Apache HTTP Server From a Browser
Sample Records from access_log
The Apache Log Files
Two Log Files -
access_log
and
error_log
Appendix A
Appendix B
Appendix C
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