Linux System Administration Recipes A Problem-Solution Approach

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CHAPTER 10 ■ THINGS GO IN, THINGS GO OUT■ Note These paths seem to change distressingly often! This was in use at time of writing; it may have changedby the time you read this. Take a look in the /usr/share/cups directory if this path doesn’t work.Now set up the printer like this:# lpadmin -p print1 -L "Room 43" -D "HP LaserJet 4350" -P /usr/share/cups/model/hpijs/HP/HP-LaserJet_4350-hpijs.ppd.gz -v lpd://post4.example.com/post4 -E-p sets the printer name, -L the location, and -D a human-readable description field. -P gives thepath to the printer driver, and -v sets the URI location. In this case, we’re accessing the printer via LPD,which will almost certainly be what you want. -E enables the printer (meaning it will be open to acceptjobs).After this, you can use lpoptions to set up the default options. To check what options are availablefor a given printer, use this:lpoptions -p print1 -lDepending on your printer model, this might be a very long list! For options such as memorysettings, you’ll need to check your printer documentation (or get it to print an information sheet aboutitself—most printers should have this as an option from the menu buttons on the printer itself) to findout what values your specific printer has. The lpoptions command here just tells you what options canbe set via this printer driver. Unfortunately, it’s not very helpfully formatted; an example option will looklike this:TR-Duplex/Duplex: False *TrueThis first gives the name of the option (TR-Duplex) and how it’s displayed in a GUI or web interface(Duplex). Then after the colon is the list of possible values (False or True). The starred one is the currentsetting. So to set this option, you’d use the following command:lpoptions -p print1 -o TR-Duplex=TrueYou can also try lphelp print1, which produces a much more nicely formatted result; unfortunately,the lphelp script isn’t available for Debian/Ubuntu but may be for other systems.If your printers are duplex-compatible, you should make sure to set duplex as the default, to savepaper; and you’ll also want to set the default paper size (particularly if you’re based in a country thatdoesn’t use Letter as the default size!). Here’s the lpoptions setup for my HP LaserJet 4350:lpoptions -p print1 -o Duplex=DuplexNoTumble -o PageSize=A4 -o InputSlot=Auto InstalledMemory=Mem4Again, -p is the printer name, and you use -o OptionName=OptionValue to set each option.InputSlot=Auto sets the input source to be automatically detected (this will usually mean the manualfeed if there’s paper in that and then the top tray). The InstalledMemory value is set by getting the optionname from lpoptions as earlier and checking it against your printer specs.206Download at WoweBook.Com
CHAPTER 10 ■ THINGS GO IN, THINGS GO OUTOnce you’ve set all of this stuff, you can create a script with two lines per printer (lpadmin to add theprinter and then lpoptions to set its default options), and run it on every newly installed machine. Thefinal line should be as follows to make sure that CUPS picks up the new printers:/etc/init.d/cups restartFinally, you can set the default printer. Either do this manually:lpoptions -d printernameor give your script a command-line input, which takes the following as the default:01 #!/bin/bash02 if [ $# != 1 ]; then03 echo "Script to install all printers and set default printer."04 echo "Usage: $0 defaultprinter"05 exit 1;06 fi07 defaultprinter=$10809 lpadmin -p print1 -L "Room 43" -D "HP LaserJet 4350" -P /usr/share/cups/model/hpijs/HP/HP-LaserJet_4350-hpijs.ppd.gz -v lpd://print1.example.com/print1 -E10 lpadmin -p print2 -L "Room 243" -D "HP LaserJet 4350" -P /usr/share/cups/model/hpijs/HP/HP-LaserJet_4350-hpijs.ppd.gz -v lpd://print2.example.com/print2 -E11 lpoptions -p print1 -o Duplex=DuplexNoTumble -o PageSize=A4 -o InputSlot=Auto InstalledMemory=Mem412 lpoptions -p print2 -o Duplex=DuplexNoTumble -o PageSize=A4 -o InputSlot=Auto InstalledMemory=Mem413 lpoptions -d $defaultprinter14 /etc/init.d/cupsys restart■ Note To override the option settings for a single job, you can set options temporarily on the command line. Forexample, to print in simplex, for the printer we looked at earlier, use this:lpr -P print1 -o TR-Duplex=False myfile.ps10-4. Printing Text Files ReadablyOccasionally you need to print a text file: notes to yourself, notes for someone else, or diff output thatyou want to be able to write on rather than having to use a screen. lp file.txt will straightforwardlydump the text to the printer, but that’s often not very readable. Also, it usually wastes a lot of page space,and it may try to print outside the printable area of the page (meaning that parts are cut off).207Download at WoweBook.Com
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Contents■About the Author .......
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■ CONTENTS3-7. Writing a Nagios P
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■ CONTENTS■Chapter 8: Using the
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■ CONTENTSAbout the Author■Juli
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■ CONTENTSAcknowledgmentsMany tha
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■ CONTENTSIntroductionThis book i
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■ INTRODUCTIONDownloading the Cod
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C H A P T E R 1■ ■ ■Saving Yo
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CHAPTER 1 ■ SAVING YOURSELF EFFOR
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C H A P T E R 2■ ■ ■Centraliz
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CHAPTER 2 ■ CENTRALIZING YOUR NET
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C H A P T E R 3■ ■ ■Monitorin
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CHAPTER 3 ■ MONITORING AND UPDATI
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C H A P T E R 4■ ■ ■Taking Ba
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CHAPTER 4 ■ TAKING BACKUPS AND MA
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C H A P T E R 5■ ■ ■Working w
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CHAPTER 5 ■ WORKING WITH FILESYST
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C H A P T E R 6■ ■ ■Securing
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CHAPTER 6 ■ SECURING YOUR SYSTEMS
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Page 175 and 176: CHAPTER 6 ■ SECURING YOUR SYSTEMS
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Page 191 and 192: C H A P T E R 8■ ■ ■Making Be
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Page 223 and 224: C H A P T E R 10■ ■ ■Things G
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Page 233 and 234: C H A P T E R 11■ ■ ■Tracking
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Page 251 and 252: C H A P T E R 12■ ■ ■Managing
Page 253 and 254: CHAPTER 12 ■ MANAGING TIME AND PE
Page 267 and 268: APPENDIX■ ■ ■Perl TipsSee rec
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Page 273 and 274: ■ ■ ■Index■Symbols$CDPATH,
Page 275 and 276: ■ INDEXenscript option (printing)
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■ INDEX■NNagiosadding hosts to,
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■ INDEXsyslogcentralized logging
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