Universe HaCker: Hacking Book

<div class="td-post-featured-image" style="background-color: white; box-sizing: border-box; line-height: 31px; position: relative;"><a class="td-modal-image" data-caption="" href="https://www.latesthackingnews.com/wp-content/uploads/2015/08/Selection_065.png" style="background-color: transparent; box-sizing: border-box; text-decoration: none;"><img alt="" class="entry-thumb" height="423" itemprop="image" src="https://www.latesthackingnews.com/wp-content/uploads/2015/08/Selection_065.png" style="border: 0px; box-sizing: border-box; display: block; height: auto; margin-bottom: 26px; max-width: 100%; width: auto;" title="Selection_065" width="492" /></a></div><div style="background-color: white; box-sizing: border-box; line-height: 31px; margin-bottom: 26px;"> </div><div style="background-color: white; box-sizing: border-box; line-height: 31px; margin-bottom: 26px;">“Linux 101 Hacks” by Ramesh Natarajan is available in PDF format for free. This book gives you practical examples to build a strong foundation in Linux.</div><div style="background-color: white; box-sizing: border-box; line-height: 31px; margin-bottom: 26px;">Table of Contents</div><div style="background-color: white; box-sizing: border-box; float: none; line-height: 31px; margin: 10px 0px; text-align: center;"><center style="box-sizing: border-box;"> </center><center style="box-sizing: border-box;">Chapter 1: Powerful CD Command Hacks</center></div><ul style="background-color: white; box-sizing: border-box; line-height: 31px; margin-bottom: 26px; padding: 0px;"><ul style="box-sizing: border-box; margin-bottom: 26px; padding: 0px;"><li style="box-sizing: border-box; line-height: 26px; margin-left: 21px;"><ul style="box-sizing: border-box; margin-bottom: 26px; padding: 0px;"><li style="box-sizing: border-box; margin-left: 21px;">Hack 1. Use CDPATH to define the base directory for cd command</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 2. Use cd alias to navigate up the directory effectively</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 3. Perform mkdir and cd using a single command</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 4. Use “cd -” to toggle between the last two directories</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 5. Use dirs, pushd and popd to manipulate directory stack</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 6. Use “shopt -s cdspell” to automatically correct mistyped directory names on cd</li></ul></li><li style="box-sizing: border-box; line-height: 26px; margin-left: 21px;">Chapter 2: Date Manipulation<ul style="box-sizing: border-box; margin-bottom: 26px; padding: 0px;"><li style="box-sizing: border-box; margin-left: 21px;">Hack 7. Set System Date and Time</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 8. Set Hardware Date and Time</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 9. Display Current Date and Time in a Specific Format</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 10. Display Past Date and Time</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 11. Display Future Date and Time</li></ul></li><li style="box-sizing: border-box; line-height: 26px; margin-left: 21px;">Chapter 3: SSH Client Commands<ul style="box-sizing: border-box; margin-bottom: 26px; padding: 0px;"><li style="box-sizing: border-box; margin-left: 21px;">Hack 12. Identify SSH Client Version</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 13. Login to Remote Host using SSH</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 14. Debug SSH Client Session</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 15. Toggle SSH Session using SSH Escape Character</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 16. SSH Session Statistics using SSH Escape Character</li></ul></li><li style="box-sizing: border-box; line-height: 26px; margin-left: 21px;">Chapter 4: Essential Linux Commands<ul style="box-sizing: border-box; margin-bottom: 26px; padding: 0px;"><li style="box-sizing: border-box; margin-left: 21px;">Hack 17. Grep Command</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 18. Find Command</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 19. Suppress Standard Output and Error Message</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 20. Join Command</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 21. Change the Case</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 22. Xargs Command</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 23. Sort Command</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 24. Uniq Command</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 25. Cut Command</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 26. Stat Command</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 27. Diff Command</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 28. Display total connect time of users</li></ul></li> <li style="box-sizing: border-box; line-height: 26px; margin-left: 21px;">Chapter 5: PS1, PS2, PS3, PS4 and PROMPT_COMMAND<ul style="box-sizing: border-box; margin-bottom: 26px; padding: 0px;"><li style="box-sizing: border-box; margin-left: 21px;">Hack 29. PS1 – Default Interaction Prompt</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 30. PS2 – Continuation Interactive Prompt</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 31. PS3 – Prompt used by “select” inside shell script</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 32. PS4 – Used by “set -x” to prefix tracing output</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 33. PROMPT_COMMAND</li></ul></li><li style="box-sizing: border-box; line-height: 26px; margin-left: 21px;">Chapter 6: Colorful and Functional Shell Prompt Using PS1<ul style="box-sizing: border-box; margin-bottom: 26px; padding: 0px;"><li style="box-sizing: border-box; margin-left: 21px;">Hack 34. Display username, hostname and current working directory in the prompt</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 35. Display current time in the prompt</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 36. Display output of any command in the prompt</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 37. Change foreground color of the prompt</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 38. Change background color of the prompt</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 39. Display multiple colors in the prompt</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 40. Change the prompt color using tput</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 41. Create your own prompt using the available codes for PS1 variable</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 42. Use bash shell function inside PS1 variable</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 43. Use shell script inside PS1 variable</li></ul></li><li style="box-sizing: border-box; line-height: 26px; margin-left: 21px;">Chapter 7: Archive and Compression<ul style="box-sizing: border-box; margin-bottom: 26px; padding: 0px;"><li style="box-sizing: border-box; margin-left: 21px;">Hack 44. Zip command basics</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 45. Advanced compression using zip command</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 46. Password Protection of Zip files</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 47. Validate a zip archive</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 48. Tar Command Basics</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 49. Combine gzip, bzip2 with tar</li></ul></li><li style="box-sizing: border-box; line-height: 26px; margin-left: 21px;">Chapter 8: Command Line History<ul style="box-sizing: border-box; margin-bottom: 26px; padding: 0px;"><li style="box-sizing: border-box; margin-left: 21px;">Hack 50. Display TIMESTAMP in history using HISTTIMEFORMAT</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 51. Search the history using Control+R</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 52. Repeat previous command quickly using 4 different methods</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 53. Execute a specific command from history</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 54. Execute previous command that starts with a specific word</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 55. Control the total number of lines in the history using HISTSIZE</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 56. Change the history file name using HISTFILE</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 57. Eliminate the continuous repeated entry from history using HISTCONTROL</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 58. Erase duplicates across the whole history using HISTCONTROL</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 59. Force history not to remember a particular command using HISTCONTROL</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 60. Clear all the previous history using option -c</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 61. Substitute words from history commands</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 62. Substitute a specific argument for a specific command</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 63. Disable the usage of history using HISTSIZE</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 64. Ignore specific commands from the history using HISTIGNORE</li></ul></li><li style="box-sizing: border-box; line-height: 26px; margin-left: 21px;">Chapter 9: System Administration Tasks<ul style="box-sizing: border-box; margin-bottom: 26px; padding: 0px;"><li style="box-sizing: border-box; margin-left: 21px;">Hack 65. Partition using fdisk</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 66. Format a partition using mke2fsk</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 67. Mount the partition</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 68. Fine tune the partition using tune2fs</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 69. Create a swap file system.</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 70. Create a new user</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 71. Create a new group and assign to an user</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 72. Setup SSH passwordless login in OpenSSH</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 73. Use ssh-copy-id along with ssh-agent</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 74. Crontab</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 75. Safe Reboot Of Linux Using Magic SysRq Key</li></ul></li><li style="box-sizing: border-box; line-height: 26px; margin-left: 21px;">Chapter 10: Apachectl and Httpd Examples<ul style="box-sizing: border-box; margin-bottom: 26px; padding: 0px;"><li style="box-sizing: border-box; margin-left: 21px;">Hack 76. Pass different httpd.conf filename to apachectl</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 77. Use a temporary DocumentRoot without modifying httpd.conf</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 78. Increase the Log Level temporarily</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 79. Display the modules inside Apache</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 80. Show all accepted directives inside httpd.conf</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 81. Validate the httpd.conf after making changes</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 82. Display the httpd build parameters</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 83. Load a specific module only on demand</li></ul></li><li style="box-sizing: border-box; line-height: 26px; margin-left: 21px;">Chapter 11: Bash Scripting<ul style="box-sizing: border-box; margin-bottom: 26px; padding: 0px;"><li style="box-sizing: border-box; margin-left: 21px;">Hack 84. Execution Sequence of .bash_* files</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 85. How to generate random number in bash shell</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 86. Debug a shell script</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 87. Quoting</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 88. Read data file fields inside a shell script</li></ul></li><li style="box-sizing: border-box; line-height: 26px; margin-left: 21px;">Chapter 12: System Monitoring and Performance<ul style="box-sizing: border-box; margin-bottom: 26px; padding: 0px;"><li style="box-sizing: border-box; margin-left: 21px;">Hack 89. Free command</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 90. Top Command</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 91. Ps Command</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 92. Df Command</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 93. Kill Command</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 94. Du Command</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 95. lsof commands.</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 96. Sar Command</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 97. vmstat Command</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 98. Netstat Command</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 99. Sysctl Command</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 100. Nice Command</li><li style="box-sizing: border-box; margin-left: 21px;">Hack 101. Renice Command</li></ul></li></ul></ul><center> <div style="background-color: white; box-sizing: border-box; line-height: 31px; margin-bottom: 26px;">Author(s): Ramesh Natarajan File Size: 838 KB File Format: PDF Number of pages: – 140 Download Link: – <a href="http://langevin.univ-tln.fr/cours/UPS/extra/Linux-101-Hacks.pdf" style="background-color: transparent; box-sizing: border-box; text-decoration: none;" target="_blank">Linux 101 Hacks</a></div>

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