Linux 101 Hacks eBook for free download

For all you Linux enthusiasts, Ramesh Natarajan , the Author of has made available his latest book “Linux 101 Hacks” for free download. There are 101 hacks in his book which will give you a strong Linux foundation. There is thorough explanation for each hack with the relevant commands in Linux which makes it easy to follow. It has 12 chapters and covers 140 pages. Though half of these hacks are already shared on his blog, the remaining half are brand new. This e-book has received a lot of recommendations from Academic institutions all over the world. Download details are given at the end of the article linux-101-hacks-175-big

Here are the contents of the book:

Linux 101 Hacks – Table of Contents
Chapter 1: Powerful CD Command Hacks

* Hack 1. Use CDPATH to define the base directory for cd command
* Hack 2. Use cd alias to navigate up the directory effectively
* Hack 3. Perform mkdir and cd using a single command
* Hack 4. Use “cd -” to toggle between the last two directories
* 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

Chapter 2: Date Manipulation

* Hack 7. Set System Date and Time
* Hack 8. Set Hardware Date and Time
* Hack 9. Display Current Date and Time in a Specific Format
* Hack 10. Display Past Date and Time
* Hack 11. Display Future Date and Time

Chapter 3: SSH Client Commands

* Hack 12. Identify SSH Client Version
* Hack 13. Login to Remote Host using SSH
* Hack 14. Debug SSH Client Session
* Hack 15. Toggle SSH Session using SSH Escape Character
* Hack 16. SSH Session Statistics using SSH Escape Character

Chapter 4: Essential Linux Commands

* Hack 17. Grep Command
* Hack 18. Find Command
* Hack 19. Suppress Standard Output and Error Message
* Hack 20. Join Command
* Hack 21. Change the Case
* Hack 22. Xargs Command
* Hack 23. Sort Command
* Hack 24. Uniq Command
* Hack 25. Cut Command
* Hack 26. Stat Command
* Hack 27. Diff Command
* Hack 28. Display total connect time of users

Chapter 5: PS1, PS2, PS3, PS4 and PROMPT_COMMAND

* Hack 29. PS1 – Default Interaction Prompt
* Hack 30. PS2 – Continuation Interactive Prompt
* Hack 31. PS3 – Prompt used by “select” inside shell script
* Hack 32. PS4 – Used by “set -x” to prefix tracing output

Chapter 6: Colorful and Functional Shell Prompt Using PS1

* Hack 34. Display username, hostname and current working directory in the prompt
* Hack 35. Display current time in the prompt
* Hack 36. Display output of any command in the prompt
* Hack 37. Change foreground color of the prompt
* Hack 38. Change background color of the prompt
* Hack 39. Display multiple colors in the prompt
* Hack 40. Change the prompt color using tput
* Hack 41. Create your own prompt using the available codes for PS1 variable
* Hack 42. Use bash shell function inside PS1 variable
* Hack 43. Use shell script inside PS1 variable

Chapter 7: Archive and Compression

* Hack 44. Zip command basics
* Hack 45. Advanced compression using zip command
* Hack 46. Password Protection of Zip files
* Hack 47. Validate a zip archive
* Hack 48. Tar Command Basics
* Hack 49. Combine gzip, bzip2 with tar

Chapter 8: Command Line History

* Hack 50. Display TIMESTAMP in history using HISTTIMEFORMAT
* Hack 51. Search the history using Control+R
* Hack 52. Repeat previous command quickly using 4 different methods
* Hack 53. Execute a specific command from history
* Hack 54. Execute previous command that starts with a specific word
* Hack 55. Control the total number of lines in the history using HISTSIZE
* Hack 56. Change the history file name using HISTFILE
* Hack 57. Eliminate the continuous repeated entry from history using HISTCONTROL
* Hack 58. Erase duplicates across the whole history using HISTCONTROL
* Hack 59. Force history not to remember a particular command using HISTCONTROL
* Hack 60. Clear all the previous history using option -c
* Hack 61. Substitute words from history commands
* Hack 62. Substitute a specific argument for a specific command
* Hack 63. Disable the usage of history using HISTSIZE
* Hack 64. Ignore specific commands from the history using HISTIGNORE

Chapter 9: System Administration Tasks

* Hack 65. Partition using fdisk
* Hack 66. Format a partition using mke2fsk
* Hack 67. Mount the partition
* Hack 68. Fine tune the partition using tune2fs
* Hack 69. Create a swap file system.
* Hack 70. Create a new user
* Hack 71. Create a new group and assign to an user
* Hack 72. Setup SSH passwordless login in OpenSSH
* Hack 73. Use ssh-copy-id along with ssh-agent
* Hack 74. Crontab
* Hack 75. Safe Reboot Of Linux Using Magic SysRq Key

Chapter 10: Apachectl and Httpd Examples

* Hack 76. Pass different httpd.conf filename to apachectl
* Hack 77. Use a temporary DocumentRoot without modifying httpd.conf
* Hack 78. Increase the Log Level temporarily
* Hack 79. Display the modules inside Apache
* Hack 80. Show all accepted directives inside httpd.conf
* Hack 81. Validate the httpd.conf after making changes
* Hack 82. Display the httpd build parameters
* Hack 83. Load a specific module only on demand

Chapter 11: Bash Scripting

* Hack 84. Execution Sequence of .bash_* files
* Hack 85. How to generate random number in bash shell
* Hack 86. Debug a shell script
* Hack 87. Quoting
* Hack 88. Read data file fields inside a shell script

Chapter 12: System Monitoring and Performance

* Hack 89. Free command
* Hack 90. Top Command
* Hack 91. Ps Command
* Hack 92. Df Command
* Hack 93. Kill Command
* Hack 94. Du Command
* Hack 95. lsof commands.
* Hack 96. Sar Command
* Hack 97. vmstat Command
* Hack 98. Netstat Command
* Hack 99. Sysctl Command
* Hack 100. Nice Command
* Hack 101. Renice Command

This ebook can be downloaded here . The Password is “xxxxxxxxxx”. The new password is “xxxxx-xx-xxxxxxx”. The latest password is now “xxxxx-xx-xxxxxxxxx”. Cheers!

The files and password has been removed from this blog post because of a request from the author of this e-book. Please follow the link to his website and then download it. This will support the several months of hard work that he put into this e-book.

You can leave a response, or trackback from your own site.

8 Responses to “Linux 101 Hacks eBook for free download”

  1. Pothi says:

    Thanks for the link, buddy!

  2. Krishna says:

    The password has changed , it is “xxxxx-xx-xxxxxxx” now.

  3. Ananth says:

    Oh! Thanks for the update Kris.

  4. ankit says:

    even “xxxxx-xx-xxxxxxx” not working now!

  5. wolfgang schmidt says:

    Avoid the circus, download it from

  6. Aftaab says:

    xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx is NOT working. :(

  7. Ananth says:

    The files and password has been removed from this blog post because of a request from the author of this e-book. Please follow the link to his website and then download it. This will support the several months of hard work that he put into this e-book.

  8. Sr Troya says:

    Thx, for keep it updated, you are the only page that i find with the password, i will ad you like a friend blog in mine…

Leave a Reply