1. CIS 191 - Lesson 10 Printers

2. CIS 191 - Lesson 10

3. Two predominate types of printers Thermal inkjet technology Laser, drum, toner technology

4. CIS 191 - Lesson 10 So many ways to hook them up … Now: Network USB Wireless (Bluetooth, IR) PictBridge (USB based) Back then: Serial cable Parallel printer cable

5. CIS 191 - Lesson 10 Printer Configuration

6. CIS 191 - Lesson 10 System V based print subsystem lp (to print) lpstat (queue management) cancel (to remove jobs) BSD based print subsystem lpr (to print) lpq (queue management) lprm (to remove jobs) CUPS Provides both System V and Berkeley based command-line interfaces Supports new Internet Printing Protocol Works with Samba Printing We will be just looking at CUPS

7. CIS 191 - Lesson 10 CUPS The service command will check the status and start up the service. CUPS has a web based administration tool which can be reached on port 631.

8. CIS 191 - Lesson 10 Service Configuration

9. CIS 191 - Lesson 10 Sidetrack – Service command Not: the effects of the service command changes will last until the next shutdown. They are not permanent.

10. CIS 191 - Lesson 10 Use the type and file commands to find the location and type of commands Sidetrack – Service command The service command is a viewable shell script (reduced type size here so it will fit)

11. CIS 191 - Lesson 10 CUPS CUPS is managed by a web-based configuration utility on port 631 Local access only by default

12. CIS 191 - Lesson 10 CUPS To enable remote access click on Administration tab …

13. CIS 191 - Lesson 10 CUPS … and scroll down to allow remote administration

14. CIS 191 - Lesson 10 CUPS Authenticate yourself as root to confirm change to allow remote administration CUPS service will restart

15. CIS 191 - Lesson 10 CUPS Browse to http://xxx.xxx.xxx.xxx:631/ from another system You may now manage the CUPS service on Benji remotely from another system.

16. CIS 191 - Lesson 10 CUPS Printer: HP LaserJet 1320n Connection: LAN Next step is to add printers

17. CIS 191 - Lesson 10 CUPS IP Address for this 1320n is 192.168.0.12 The LaserJets also have a web- based management utility

18. CIS 191 - Lesson 10 CUPS benji 192.168.0.25 hp1320n 192.168.0.12 This example will show how to add the HP 1320n as a networked printer.

19. CIS 191 - Lesson 10 CUPS To add in HP 1320N printer … … the first step is to click the Add Printer button

20. CIS 191 - Lesson 10 CUPS You may get this error if your are browsing in remotely because no certificates have been set up for https protocol. Not a problem if you are browsing locally

21. CIS 191 - Lesson 10 CUPS One way to address the certificate problem is to add an exception.

22. CIS 191 - Lesson 10 CUPS This adds the exception

23. CIS 191 - Lesson 10 CUPS Add an exception only when you do trust the site. In this case we built and setup the Benji VM so we trust it.

24. CIS 191 - Lesson 10 CUPS Click Confirm Security Exception button

25. CIS 191 - Lesson 10 CUPS Now we can add the LaserJet

26. CIS 191 - Lesson 10 CUPS Fill in basic information

27. CIS 191 - Lesson 10 CUPS We will use JetDirect. JetDirect is a small printer server built into some of HP's printers.

28. CIS 191 - Lesson 10 CUPS Hmmm …. lets click on Network Printers link to figure this one out.

29. CIS 191 - Lesson 10 CUPS Scroll down to HP printers

30. CIS 191 - Lesson 10 CUPS We will use the JetDirect w/o IPP for the HP 1320n IPP is Internet Printing Protocol for send print jobs over the Internet via the http protocol HP JetDirect cards use port 9100 A socket is the combination of an IP address and a port number.

31. CIS 191 - Lesson 10 CUPS socket://192.168.0.12/9100 This defines how to communicate with the printer

32. CIS 191 - Lesson 10 CUPS (you will need to enter root's password) Service will restart

33. CIS 191 - Lesson 10 CUPS Must select printer from long list

34. CIS 191 - Lesson 10 CUPS We will choose hp LaserJet 1320 series Postscript (recommended) (en)

35. CIS 191 - Lesson 10 CUPS Lets double check the printer supports PostScript … it does

36. CIS 191 - Lesson 10 CUPS To finally add the printer it will be necessary authenticate as root

37. CIS 191 - Lesson 10 CUPS Printer has been added

38. CIS 191 - Lesson 10 CUPS View of newly added printer from Printer tab

39. CIS 191 - Lesson 10 CUPS Lets test the printer by printing this CUPS web page to it … and it works.

40. CIS 191 - Lesson 10 CUPS Printer: hp photosmart 7550 (color inkjet technology) Connection: USB Lets add second printer

41. CIS 191 - Lesson 10 Sidetrack – The previous 7550 "Hot Lips" 6 G's of acceleration 8-pen turret Grit wheel technology from HP Labs

42. CIS 191 - Lesson 10 CUPS benji 192.168.0.25 hpdv2000 192.168.0.27 The second printer is connected by USB to a Windows notebook computer

43. CIS 191 - Lesson 10 CUPS First step is the same which is to fill out basic information on printer

44. CIS 191 - Lesson 10 CUPS For this connection we will use Samba. Samba implements Windows file and print services sharing on Linux. Note Windows uses SMB (Server Message Block) protocol to implement these services

45. CIS 191 - Lesson 10 CUPS Will need to specify the Windows print share

46. CIS 191 - Lesson 10 CUPS Will need to specify the Windows print share as //hostname/printsharename

47. CIS 191 - Lesson 10 CUPS Username and password Not required This machine is in the same workgroup smb://server/sharename This machine is in a different workgroup smb://workgroup/server/sharename Username and password required This machine is in the same workgroup smb://username:password@server/sharename This machine is in a different workgroup smb://username:password@workgroup/server/sharename Ways to specify a Windows share

48. CIS 191 - Lesson 10 CUPS Select make of printer

49. CIS 191 - Lesson 10 CUPS Select model of printer HP PhotoSmart 7550 Foomatic/hpijs (recommended) (en)

50. CIS 191 - Lesson 10 CUPS Printer has been added

51. CIS 191 - Lesson 10 CUPS Test new printer by printing its own management page

52. CIS 191 - Lesson 10 Printing in Linux

53. CIS 191 - Lesson 10 CUPS lpstat command The –p option will show the available printers The –d option will identify the default printer

54. CIS 191 - Lesson 10 CUPS lp and lpr commands Either command will print myfile to the selected printer Note that both lp and lpr will read from stdin. This allows output from another command to be piped in

55. CIS 191 - Lesson 10 CUPS convert command JPEG files need to be converted to postscript before printing with lp or lpr commands Print job #28

56. CIS 191 - Lesson 10 Configuring CUPS

57. CIS 191 - Lesson 10 CUPS configuration file or command, or GUI Must restart CUPS after changing configuration file with: service cups restart Three ways to set the default printer – edit configuration file, command or GUI [root@benji ~]# cat /etc/cups/printers.conf # Printer configuration file for CUPS v1.2.4 # Written by cupsd on 2008-11-16 03:06 Info hp photosmart 7550 Location Den DeviceURI smb://hpdv2000/hp7550 State Idle StateTime 1226791825 Accepting Yes Shared Yes JobSheets none none QuotaPeriod 0 PageLimit 0 KLimit 0 OpPolicy default ErrorPolicy stop-printer

58. CIS 191 - Lesson 10 CUPS lpoptions command The –d option will set the default printer. This will override the system default printer set using the web UI

59. CIS 191 - Lesson 10 Managing Print Jobs

60. CIS 191 - Lesson 10 CUPS Rejecting Jobs Clicking the button on the web based utility will reject further jobs

61. CIS 191 - Lesson 10 CUPS Stopping the Printer Clicking the button on the web based utility will still allow jobs to be spooled

62. CIS 191 - Lesson 10 CUPS Showing jobs waiting to print Use lpq or lpstat to show spooled print jobs

63. CIS 191 - Lesson 10 CUPS Removing/canceling pending print jobs Use lpq or lpstat to show the spooled print jobs Use cancel or lprm to remove print jobs

64. CIS 191 - Lesson 10 Spool Files

65. CIS 191 - Lesson 10 CUPS Spool files in /var/spool/cups Spooled print files are kept in pairs – one control file and one data file – in /var/spool/cups Print job #27

66. CIS 191 - Lesson 10 CUPS Spool files in /var/spool/cups The data file is ascii and the control file is binary when printing a text file Print job #27

67. CIS 191 - Lesson 10 Exercise: CUPS Enable the CUPS service to run at system startup Turn on the CUPS service Create a "fake" printer and disable it. Practice printing to your fake printer.

68. CIS 191 - Lesson 10 wrap up

69. CIS 191 - Lesson 10 Commands: service- Manually control services chkconfig- Service startup configuration ifconfig- Getting IP address lp, lpr- Linux print command cancel, lprm- cancel print job lpq, lpstat- Show print queue lpoptions- Show and change print options convert- convert image file types Files and Directories: /var/spool/cups- spooled print jobs /etc/cups- CUPS configuration files Web: http://hostname:631- CUPS web based management utility http://hostname:9100- HP JetDirect printer