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LPRng-HOWTO

Patrick Powell papowell@astart.com

13 Apr 2000 (For LPRng-3.6.14beta25)


The LPRng software is an enhanced, extended, and portable implementation of the Berkeley LPR print spooler functionality. While providing the same interface and meeting RFC1179 requirements, the implementation is completely independent and provides support for the following features: lightweight (no databases needed) lpr, lpc, and lprm programs; dynamic redirection of print queues; automatic job holding; highly verbose diagnostics; multiple printers serving a single queue; client programs do not need to run SETUID root; greatly enhanced security checks; load balancing across multiple printers; and a greatly improved permission and authorization mechanism. The source software compiles and runs on a wide variety of UNIX systems, and is compatible with other print spoolers and network printers that use the LPR interface and meet RFC1179 requirements. The companion ifhp print filter is used with the LPRng to provide hardware level support for PostScript, PCL, text, and other printers. The ifhp filter also provides diagnostic and error information as well as accounting information. The LPRng distribution also has a set of easily customizable programs to produce banner pages for job identification. The SVR4 lp and lpstat functionality is provided by a set of emulator programs, and LPRng can be easily integrated with the Samba SMB support package. For users that require secure and/or authenticated printing support, LPRng supports Kerberos 5, MIT Kerberos 4 extensions to LPR, PGP, and simple MD5 based authentication. Additional authentication support is extremely simple to add.

1. Introduction

2. Installation

3. System Specific Notes

4. Print Spooling Tutorial

5. LPRng Clients - lpr, lprm, lpq, lpc, lpstat

6. Forwarding Jobs

7. Communication With A Printer

8. Typical Printcap Configurations

9. LPRng checkpc Utility

10. Spool Queues and Files

11. Configuration File lpd.conf and Options

12. Job Processing

13. Filters

14. Permissions and Authentication

15. Accounting

16. Status Monitoring and Logging

17. RFC 1179 - Line Printer Daemon Protocol

18. Defective RFC1179 Implementations

19. The Most Frequently Asked Questions

20. Development Test Configuration

21. Acknowledgements

22. Index To All The Configuration and Printcap Options


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