ch06 printing

8/9/2019 Ch06 Printing

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SAIGONLAB 83 Nguyn Th Nh, P9, Q.Tn Bnh, Tp. HCM LPI 102

Objectives

Explain the print spooler model

Demonstrate how to add one or more printers

Configure network printers

Identify and install print filters

Demonstrate how to use PostScript printers


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Print SpoolerModel

A user submits a print job with the lpr command

The system puts the job into the proper queue in the

/var/spool/lpd directory

The printer daemon prints jobs from the spoolerqueue (s)


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UserCommands

Submit print jobs with (BSD) lpr:

Each job has a unique request id, displayed on the

screen

System should have a default printer, override withP

Users can specify default with PRINTER variable

$ lpr -P clerk /etc/hostsprint with clerk printer

$ lpr /etc/hosts print with default printer


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UserCommands

List job (in queue) details with lpq:

$ lpq -P clerk

$ lpq

$man lpq Delete jobs with lprm:

$lprm job-id

$ cancel job-id


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mpage

mpage is a utility that allows you to print multiple

text and PostScript documents onto one page

mpage file

Example:$mpage -4 test_file.txt| lpr


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Manipulating Printers with LPC

All printer control done with lpc:

Enable or disable printer

Enable or disable a printers queue

Rearrange the order of jobs in a queue

Find the status of printers, queues, daemons

Syntax :

lpc [command [all | printer]]


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Manipulating Printers

abort This command works like stop butterminates printing immediately, evenin the middle ofa job. The job isretained for reprint when the printer isagain started

disable enable

These two commands control the queuingof new print jobs. With a queuedisabled but printing started, printingcontinues but new jobs are rejected

start stop

These two commands control printing andthe child lpdprocesses. When a stopcommand is issued, the current printjob is allowed to complete. Then thechild daemon is stopped and furtherprinting is disabled. start enablesprinting and starts the child lpd if jobsare pending. The print queues remainactive


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Manipulating Printers

down [message] disable, stop, and store the free-formmessage for display by lpr, informingthe user why the printer isunavailable

up en

able

and st

art

restart This command kills and restarts a childlpd, or starts one when none waspreviously running

exit or quit Terminate lpc'sinteractivemode

help Display help information on commands


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Adding a Printer

All printer configurations are defined in /etc/printcap

Adding a printer is very straightforward with the easy

to use tools that are available with most distributions

printtool. Without printtool, you must manual editing

configuration file (/etc/printcap)


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Adding a Printer

Verify /etc/printcap file and /var/spool/lpd/ directory

to ensure the success of printer creation

Printtool can be used to setup many different kinds of

printers.Local printer

Network printer


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Printing Environment


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Adding new network printer


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Adding new network printerA


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Tips

cat /etc/printcap

rm /etc/printcap

/etc/init.d/lpd stop

/etc/init.d/lpd start

cat /etc/printcap and compare with the original


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Network Printing Configuration

On printer server :

Edit /etc/hosts.lpd or /etc/hosts.equiv to include

names of remote machines that you want to allow

to print to your printer On printer client :

Edit /etc/printcap


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Sample of /etc/printcap

#Local printer

#

lp|ljet:\

:sd=/var/spool/lpd/lp:\

:mx#0:\:sh:\:lp=/dev/lp0:\

:if=/var/spool/lpd/lp/filter:\

:lf=/var/spool/lpd/lp/log:


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Sample of /etc/printcap (cont.1)

# Remote printer

# lp| dj| deskjet:\

:sd=/var/spool/lpd/dj:\

:rm=machine.out.there.com:\

:rp=printername: \

:lp=/dev/null: \:sh:


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Sample of /etc/printcap (cont.2)

# Remote SAMBA printer

#

lp| remote-smbprinter:\

:lp=/dev/null:\

:sh:\

:sd=/var/spool/lpd/lp-samba:\

:if=/usr/local/sbin/smbprint:


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Tips forCups

/etc/cups/printers.conf

Info printer

DeviceURI smb://192.168.22.90/HPLaserJ.

State StoppedStateMessage

Accepting No

JobSheets none none

QuotaPeriod0

PageLimit 0

KLimit 0

/etc/init.d/cups [stop|start|restart]


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Command PrinterManagement

$lpadmin [option]

$lpstat t

$enable printer_name

$accept printer_name

$lpr

$lprm and cancel


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Summary

Explain the print spooler model

Demonstrate how to add one or more printers

Configurenetwork printers

Identify and install print filters

Demonstrate how to use PostScript printers

ch06 printing

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