Linux System Administration Recipes A Problem-Solution Approach

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■ CONTENTS5-5. Resizing Partitions on the Fly.............................................................................. 123With a Nearly Full Disk .................................................................................. 1265-6. Using RAID Arrays and mdadm ........................................................................... 128mdadm .......................................................................................................... 1295-7. Using rsnapshot .................................................................................................. 1305-8. Working with Other Filesystems ......................................................................... 132ext4 ............................................................................................................... 133XFS................................................................................................................ 134■Chapter 6: Securing Your <strong>System</strong>s....................................................................1356-1. Using and Limiting SSH Keys .............................................................................. 1356-2. Managing Keys with Keychain ............................................................................ 1376-3. Limiting rsync Over ssh....................................................................................... 1386-4. ssh Options: Keeping Your Connection Alive....................................................... 1406-5. ssh Options: Minimizing Typing .......................................................................... 1416-6. Transferring Files Over an Existing ssh Connection............................................ 1426-7. Kerberizing Your SSH Setup................................................................................ 1436-8. Setting and Enforcing a Password Policy with Kerberos .................................... 1446-9. Setting and Enforcing Password Policy with pam_cracklib................................ 1466-10. Checking the Password Policy .......................................................................... 1476-11. Limiting sudo..................................................................................................... 1486-12. sudo: Figuring Out Which Password to Use ...................................................... 1496-13. Stopping Brute-Force Attacks with iptables ..................................................... 1516-14. Monitoring for Break-ins with chkrootkit .......................................................... 1526-15. Using cron-apt to Keep Updated ....................................................................... 154■Chapter 7: Working with Apache.......................................................................1577-1. Using the apache2 Command Line...................................................................... 1577-2. Apache2: Dealing with Modules.......................................................................... 1607-3. Setting Up an SSL Certificate for Apache2.......................................................... 1627-4. Compiling and Configuring Apache with SSL...................................................... 164Testing .......................................................................................................... 166Troubleshooting ............................................................................................ 1667-5. Securing Your Web Site with htaccess ............................................................... 1677-6. Securing Your Web Site: Apache with Kerberos ................................................. 169viiiDownload at WoweBook.Com
■ CONTENTS■Chapter 8: Using the Command Line Better.......................................................1718-1. Using bash Keyboard Shortcuts .......................................................................... 1718-2. Writing Your Own bash Functions ....................................................................... 1748-3. Implementing Programmable Completion with bash .......................................... 1768-4. Using find ............................................................................................................ 179Options .......................................................................................................... 179Expressions................................................................................................... 1808-5. Using xargs.......................................................................................................... 181find with xargs .............................................................................................. 181xargs and File Contents................................................................................. 182Moving Files .................................................................................................. 183■Chapter 9: Working with Text in Files ...............................................................1859-1. Using more, less, and Compressed Files ............................................................ 1859-2. Using the power of sed ....................................................................................... 1879-2a. Deleting Lines ...................................................................................... 1879-2b. Substitutions........................................................................................ 1889-2c. Appending, Inserting, and Changing Lines .......................................... 1909-3. Using awk: Snippets and Quick Reference ......................................................... 1919-3a. awk, if, and Strings.............................................................................. 1939-4. Manipulating File Contents with Perl .................................................................. 1939-4a. Perl, Files, and Command-Line Options............................................... 1949-5. When It’s Not ASCII: Dealing with UTF-8 ............................................................. 1959-5a. Entering UTF-8 Characters in X11 ....................................................... 1969-5b. Entering UTF-8 Characters in Vim ....................................................... 1999-6. Getting Readable Text from Binaries................................................................... 200■Chapter 10: Things Going In, Things Going Out .................................................20310-1. Changing Keymaps in X..................................................................................... 20310-2. Linking Keys to Programs ................................................................................. 20410-3. Automating Printer Setup with lpadmin ............................................................ 20510-4. Printing Text Files Readably.............................................................................. 20710-5. Using ssh -X to Log in Remotely ....................................................................... 20810-6. Using GDM to Log in Remotely.......................................................................... 209Troubleshooting ............................................................................................ 20910-7. Using VNC or Similar to Log in Remotely........................................................... 210ixDownload at WoweBook.Com
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Page 7 and 8: Contents■About the Author .......
Page 9: ■ CONTENTS3-7. Writing a Nagios P
Page 13 and 14: ■ CONTENTSAbout the Author■Juli
Page 15 and 16: ■ CONTENTSAcknowledgmentsMany tha
Page 17 and 18: ■ CONTENTSIntroductionThis book i
Page 19 and 20: ■ INTRODUCTIONDownloading the Cod
Page 21 and 22: C H A P T E R 1■ ■ ■Saving Yo
Page 23 and 24: CHAPTER 1 ■ SAVING YOURSELF EFFOR
Page 41 and 42: C H A P T E R 2■ ■ ■Centraliz
Page 43 and 44: CHAPTER 2 ■ CENTRALIZING YOUR NET
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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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CHAPTER 7 ■ WORKING WITH APACHEOn
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CHAPTER 7 ■ WORKING WITH APACHEdi
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CHAPTER 7 ■ WORKING WITH APACHE4.
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CHAPTER 7 ■ WORKING WITH APACHE
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CHAPTER 7 ■ WORKING WITH APACHEAl
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CHAPTER 7 ■ WORKING WITH APACHE
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C H A P T E R 8■ ■ ■Making Be
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CHAPTER 8 ■ USING THE COMMAND LIN
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CHAPTER 9 ■ WORKING WITH TEXT IN
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C H A P T E R 10■ ■ ■Things G
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CHAPTER 10 ■ THINGS GO IN, THINGS
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C H A P T E R 11■ ■ ■Tracking
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CHAPTER 11 ■ TRACKING DOWN BUGSTh
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CHAPTER 11 ■ TRACKING DOWN BUGS01
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CHAPTER 11 ■ TRACKING DOWN BUGS
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CHAPTER 11 ■ TRACKING DOWN BUGSTh
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CHAPTER 11 ■ TRACKING DOWN BUGSAn
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CHAPTER 11 ■ TRACKING DOWN BUGS#
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C H A P T E R 12■ ■ ■Managing
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CHAPTER 12 ■ MANAGING TIME AND PE
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APPENDIX■ ■ ■Perl TipsSee rec
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APPENDIX ■ PERL TIPS• Date::Par
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APPENDIX ■ PERL TIPSPerl Syntax N
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■ ■ ■Index■Symbols$CDPATH,
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■ INDEXenscript option (printing)
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■ INDEX■NNagiosadding hosts to,
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■ INDEXsyslogcentralized logging
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Linux System Administration Recipes A Problem-Solution Approach

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