Linux 101 Hacks 2nd edition
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Chapter 12: System Monitoring and Performance

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  • Hack 91. Ps Command Examples
  • Hack 94. Du Command Examples
  • Hack 96. Sar Command Examples
  • Hack 99. Sysctl Command Examples
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  • Chapter 1: Powerful CD Command Hacks
    • Hack 2. Use cd alias to navigate up the directory effectively
    • Hack 5. Use dirs, pushd and popd to manipulate directory stack
    • Hack 6. Use “shopt -s cdspell” to automatically correct mistyped directory names on cd
    • Hack 4. Use “cd -” to toggle between the last two directories
    • Hack 3. Perform mkdir and cd using a single command
    • Hack 1. Use CDPATH to define the base directory for cd command
  • Chapter 10: Apachectl and HTTPD Examples
    • Hack 79. Display the modules inside Apache
    • Hack 82. Display the httpd version and build parameters
    • Hack 76. Pass different httpd.conf filename to apachectl
    • Hack 77. Use a temporary DocumentRoot without modifying httpd.conf
    • Hack 83. Load a specific module only on demand
    • Hack 81. Validate the httpd.conf after making changes
    • Hack 78. Increase the Log Level temporarily
    • Hack 80. Show all accepted directives inside httpd.conf
  • Chapter 11: BASH Scripting
    • Hack 87. Single Quote and Double Quote Inside Shell Script
    • Hack 88. Read data file fields inside a shell script
    • Hack 86. How to Debug a shell script
    • Hack 84. Execution Sequence of .bash_* files
    • Hack 85. How to generate random number in bash shell
  • Chapter 12: System Monitoring and Performance
    • Hack 90. Top Command Examples
    • Hack 92. Df Command Examples
    • Hack 91. Ps Command Examples
    • Hack 95. lsof Command Examples
    • Hack 93. Kill Command Examples
    • Hack 89. Free command examples
    • Hack 96. Sar Command Examples
    • Hack 94. Du Command Examples
    • Hack 99. Sysctl Command Examples
    • Hack 100. Nice Command Examples
    • Hack 98. Netstat Command Examples
    • Hack 101. Renice Command Examples
    • Hack 97. vmstat Command Examples
  • Chapter 13: Bonus hacks
    • Compare Two Files Using Comm
    • Rar Command Usage Examples
    • OD Command Usage Examples
    • Create an ISO file from a CD or DVD
    • Tee Command Usage Examples
    • DVD Operations in Linux
    • Gpg Key-Pair Encryption and Decryption Examples
    • Make cd command Arguments Case Insensitive
    • Compact-Disk (CD) Operations in Linux
    • Specify Password Only Once for Multiple SSH Connections
  • Chapter 2: Date Manipulation
    • Hack 11. Display Future Date and Time
    • Hack 9. Display Current Date and Time in a Specific Format
    • Hack 8. Set Hardware Date and Time Using hwclock
    • Hack 7. Set System Date and Time
    • Hack 10. Display Past Date and Time
  • Chapter 3: SSH Client Commands
    • Hack 12. Identify SSH Client Version
    • Hack 14. Debug SSH Client Session
    • Hack 16. SSH Session Statistics using SSH Escape Character
    • Hack 13. Login to Remote Host using SSH
    • Hack 15. Toggle SSH Session using SSH Escape Character
  • Chapter 4: Essential Linux Commands
    • Hack 20. Join Command Examples
    • Hack 27. Diff Command Examples
    • Hack 25. Cut Command Examples
    • Hack 23. Sort Command Examples
    • Hack 22. Xargs Command Examples
    • Hack 26. Stat Command Examples
    • Hack 21. Change the Case Using tr Command
    • Hack 18. Find Command Examples
    • Hack 19. Suppress Standard Output and Error Message
    • Hack 28. Display total connect time of users
    • Hack 24. Uniq Command Examples
    • Hack 17. Grep Command Examples
  • Chapter 5: Linux Prompts
    • Hack 29. PS1 – Default Interaction Prompt
    • Hack 31. PS3 – Prompt used by “select” inside shell script
    • Hack 33. PROMPT_COMMAND
    • Hack 32. PS4 – Used by “set -x” to prefix tracing output
    • Hack 30. PS2 – Continuation Interactive Prompt
  • Chapter 6: Colorful Shell Prompt Using PS1
    • Hack 41. Create your own prompt using the available codes for PS1 variable
    • Hack 40. Change the prompt color using tput
    • Hack 34. Display username, hostname and basename of directory in the prompt
    • Hack 36. Display output of any command in the prompt
    • Hack 42. Use bash shell function inside PS1 variable
    • Hack 37. Change foreground color of the prompt
    • Hack 35. Display current time in the prompt
    • Hack 38. Change background color of the prompt
    • Hack 43. Use shell script inside PS1 variable
    • Hack 39. Display multiple colors in the prompt
  • Chapter 7: Archive and Compression
    • Hack 49. Combine gzip, bzip2 with tar
    • Hack 47. Validate a zip archive
    • Hack 44. Zip command basics
    • Hack 48. Tar Command Basics
    • Hack 45. Advanced compression using zip command.
    • Hack 46. Password Protection of Zip files
  • Chapter 8: Command Line History
    • Hack 64. Ignore specific commands from the history using HISTIGNORE
    • Hack 55. Control the total number of lines in the history using HISTSIZE
    • Hack 59. Force history not to remember a particular command using HISTCONTROL
    • Hack 60. Clear all the previous history using option -c
    • Hack 53. Execute a specific command from history
    • Hack 63. Disable the usage of history using HISTSIZE
    • Hack 58. Erase duplicates across the whole history using HISTCONTROL
    • Hack 51. Search the history using Control+R
    • Hack 61. Substitute words from history commands
    • Hack 54. Execute previous command that starts with a specific word
    • Hack 52. Repeat previous command quickly using 4 different methods
    • Hack 57. Eliminate the continuous repeated entry from history using HISTCONTROL
    • Hack 62. Substitute a specific argument for a specific command
    • Hack 50. Display TIMESTAMP in history using HISTTIMEFORMAT
    • Hack 56. Change the history file name using HISTFILE
  • Chapter 9: System Administration Tasks
    • Hack 71. Create a new group and assign to an user
    • Hack 66. Format a partition using mke2fsk
    • Hack 67. Mount the partition
    • Hack 72. Setup SSH passwordless login in OpenSSH
    • Hack 69. Create a swap file system.
    • Hack 65. Partition using fdisk
    • Hack 74. Crontab Basic Guide
    • Hack 70. Create a new user
    • Hack 73. Use ssh-copy-id along with ssh-agent
    • Hack 68. Fine tune the partition using tune2fs
    • Hack 75. Safe Reboot Of Linux Using Magic SysRq Key
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