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CUPS Administrative Guide

By : Ankur Shah
Book Image

CUPS Administrative Guide

By: Ankur Shah

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CUPS Administrative Guide
Ankur Shah
Sep, 2008 | 248 pages
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Table of Contents (16 chapters)
CUPS Administrative Guide
CUPS Administrative Guide
Credits
Credits
About the Author
About the Author
Acknowledgement
Acknowledgement
About the Reviewer
About the Reviewer
Preface
Preface
Free Chapter
1
Introduction
Introduction
Overview of the CUPS Features
History of Printing in UNIX
Printing with Personal Computers
Evolution of CUPS as a Printing System
CUPS Features
Summary
2
Building and Installing CUPS
Building and Installing CUPS
Downloading Source Code
Installing the Software
Installing a Binary Distribution
Installing CUPS Using the Package Manager on Linux
Testing CUPS
Summary
3
Printer Management
Printer Management
Printer Drivers
Managing Printer through the Command Line
Managing Print Jobs through Command Line
Managing Printers using the CUPS Web Interface
Summary
4
Managing Multiple Printers at a Time
Managing Multiple Printers at a Time
Configuring Printer Classes
Managing Printer Classes Through Command-Line
Managing Printer Classes Through CUPS Web Interface
Summary
5
CUPS Server Management
CUPS Server Management
System Requirement
Configuration Files
Classes Directives
Client Directives
Server Directives
Important Directives of cupsd.conf
Printer Directives
Concept of Operation Policies
Summary
6
Client Setup
Client Setup
Setting up a CUPS Client
Summary
7
Quota Management
Quota Management
Setting up Quota in CUPS
Correct and Incorrect Accounting
Overview of the page_log file
Flaws of the CUPS Quota system
Other Accounting Tools
Summary
8
Monitoring CUPS
Monitoring CUPS
Using the lpstat Command
Overview of the access_log File
Overview of the error_log File
Overview of snmp.conf
How SNMP Behaves in the CUPS Web Interface
Overview of mailto.conf
Monitoring SNMP Printers
Summary
9
File Typing and Filtering
File Typing and Filtering
Architecture—CUPS Filtering System
An Overview of the mime.types file
An Overview of the mime.convs file
Adding Filetypes and Filters
Overview of Filter in CUPS
Summary
10
Security
Security
Encryption Support in CUPS
Access Control
Authentication Support
Summary

Overview of the error_log File

The error_log file displays messages from the scheduler such as "warnings", "errors", and so on:

  • Level: The level field contains the type of message:

    • A: Alert message (LogLevel alert)

    • C: Critical error message (LogLevel crit)

    • D: Debugging message (LogLevel debug)

    • d: Detailed debugging message (LogLevel debug2)

    • E: Normal error message (LogLevel error)

    • I: Informational message (LogLevel info)

    • N: Notice message (LogLevel notice)

    • W: Warning message (LogLevel warn)

    • X: Emergency error message (LogLevel emerg)

  • Time of Printing: The date-time field contains the date and time when the page started printing. The format of this field is identical to the data-time field in the page_log file.

  • Message: This field contains free-form textual messages. In the following examples of the error_log files, the last field contains messages of this type.

The syntax for the error_log file is level date-time message.

The following are the some examples of entries in the error_log file ...

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