Linux 101 hacks - free eBook

http://www.thegeekstuff.com/2009/02/linux-101-hacks-download-free-ebook/Linux 101 Hacks - Table of ContentsChapter 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 cdChapter 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 TimeChapter 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 CharacterChapter 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 usersChapter 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 * Hack 33. PROMPT_COMMANDChapter 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 variableChapter 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 tarChapter 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 HISTIGNOREChapter 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 KeyChapter 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 demandChapter 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 scriptChapter 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 Commandnuma am inceput sa o rasfoiesc/scrollesc shi deja mi-a placut:alias cd..="cd .."alias cd...="cd ../.."alias cd....="cd ../../.."alias cd.....="cd ../../../.."alias cd......="cd ../../../../.."nu m-am gandit niciodata sa fac asha... deshi mi-ar fi prins bine :))