Humour In Verse

From The warped mind of Emac

Friday, June 02, 2023

Linux Command Line Hackery Series: Part 2



Welcome back to Linux Command Line Hackery, yes this is Part 2 and today we are going to learn some new skills. Let's rock

Let us first recap what we did in Part 1, if you are not sure what the following commands do then you should read Part 1.

mkdir myfiles                                                # make a directory (folder) with myfiles as name
cd myfiles                                                      # navigate to myfiles folder
touch file1 file2 file3                                    # create three empty files file1file2file3
ls -l                                                                   # view contents of current directory
echo This is file1 > file1                               # write a line of text to file1
cat file1                                                           # display contents of file1
echo This is another line in file1 >> file1    # append another line of text to file1
cat file1                                                          # display the modified content of file1

Command:  cp
Syntax:        cp source1 [source2 ...] destination
Function:     cp stands for copy. cp is used to copy a file from source to destination. Some important flags are mentioned below
Flags:          -r copy directories recursively
                     -f if an existing destination file cannot be opened, remove it and try  again

Let us make a copy of file1 using the new cp command:

cp file1 file1.bak

what this command is going to do is simply copy file1 to another file named file1.bak. You can name the destination file anything you want.
Say, you have to copy file1 to a different folder maybe to home directory how can we do that? well we can do that like this:

cp file /home/user/

I've used the absolute path here you can use whatever you like.
[Trick: ~ has a special meaning, it stands for logged in user's directory. You could have written previous command simply as
cp file1 ~/
and it would have done the same thing.]
Now you want to create a new directory in myfiles directory with the name backup and store all files of myfiles directory in the backup directory. Let's try it:

mkdir backup
cp file1 file2 file3 backup/

this command will copy file1 file2 file3 to backup directory.
We can copy multiple files using cp by specifying the directory to which files must be copied at the end.
We can also copy whole directory and all files and sub-directories in a directory using cp. In order to make a backup copy of myfiles directory and all of it's contents we will type:

cd ..                                           # navigate to previous directory
cp -r myfiles myfiles.bak       # recursively copy all contents of myfiles directory to myfiles.bak directory

This command will copy myfiles directory to myfiles.bak directory including all files and sub-directories

Command: mv
Syntax:       mv source1 [source2 ...] destination
Function:    mv stands for move. It is used for moving files from one place to another (cut/paste in GUI) and also for renaming the files.

If we want to rename our file1 to  file1.old in our myfiles folder we'll do the follow:

cd myfiles                                      # navigate first to myfiles folder
mv file1 file1.old

this command will rename the file1 to file1.old (it really has got so old now). Now say we want to create a new file1 file in our myfiles folder and move the file1.old file to our backup folder:

mv file1.old backup/                    # move (cut/paste) the file1.old file to backup directory
touch file1                                    # create a new file called file1
echo New file1 here > file1         # echo some content into file1

Command:  rmdir
Syntax: rmdir directory_name
Function: rmdir stands for remove directory. It is used for removing empty directories.

Let's create an empty directory in our myfiles directory called 'garbage' and then remove it using rmdir:

mkdir garbage
rmdir  garbage

Good practice keep it doing. (*_*)
But wait a second, I said empty directory! does it mean I cannot delete a directory which has contents in it (files and sub-directories) with rmdir? Yes!, you cannot do that with rmdir
So how am I gonna do that, well keep reading...

Command:  rm
Syntax:        rm FILE...
Function:     rm stands for remove. It is used to remove files and directories. Some of it's important flags are enlisted below.
Flags:          -r remove directories and their contents recursively
                     -f ignore nonexistent files and arguments, never prompt

Now let's say we want to delete the file file1.old in backup folder. Here is how we will do that:

rm backup/file1.old                # using relative path here

Boom! the file is gone. Keep in mind one thing when using rm "IT IS DESTRUCTIVE!". No I'm not yelling at you, I'm just warning you that when you use rm to delete a file it doesn't go to Trash (or Recycle Bin). Rather it is deleted and you cannot get it back (unless you use some special tools quickly). So don't try this at home. I'm just kidding but yes try it cautiously otherwise you are going to loose something important.

Did You said that we can delete directory as well with rm? Yes!, I did. You can delete a directory and all of it's contents with rm by just typing:

rm -r directory_name

Maybe we want to delete backup directory from our myfiles directory, just do this:

rm -r backup

And it is gone now.
Remember what I said about rm, use it with cautious and use rm -r more cautiously (believe me it costs a lot). -r flag will remove not just the files in directory it will also remove any sub-directories in that directory and there respective contents as well.

That is it for this article. I've said that I'll make each article short so that It can be learned quickly and remembered for longer time. I don't wanna bore you.
More information
  1. Hacking Tools Mac
  2. Hacking Tools And Software
  3. Pentest Tools Apk
  4. Pentest Tools Linux
  5. Hacker Tools For Mac
  6. Pentest Tools Port Scanner
  7. Hack Website Online Tool
  8. World No 1 Hacker Software
  9. Hacking App
  10. Hacking Tools 2019
  11. Hacker Tool Kit
  12. Ethical Hacker Tools
  13. Hacker Tools For Mac
  14. Hacker Tools Apk Download
  15. Hacking Tools For Windows
  16. Android Hack Tools Github
  17. Computer Hacker
  18. Hack Tools Download
  19. Ethical Hacker Tools
  20. Hacker Hardware Tools
  21. Hacker Hardware Tools
  22. Hacking Tools Windows 10
  23. Hacker Tools 2019
  24. Pentest Tools Online
  25. Hacker Hardware Tools
  26. Pentest Reporting Tools
  27. Github Hacking Tools
  28. Pentest Tools Android
  29. Hacker Tools Github
  30. Hacker Tools For Windows
  31. Pentest Tools Framework
  32. Hack Tool Apk No Root
  33. Hacking Tools Hardware
  34. Pentest Tools Linux
  35. Ethical Hacker Tools
  36. Hacking Tools For Beginners
  37. Best Hacking Tools 2019
  38. Hack Tool Apk No Root
  39. Hack Tool Apk No Root
  40. Hack Tools Download
  41. Free Pentest Tools For Windows
  42. Hacking Tools For Windows Free Download
  43. Hacking Tools Software
  44. Hack Tools For Windows
  45. Github Hacking Tools
  46. Hacking Tools For Pc
  47. Pentest Tools Apk
  48. Hacker Tools Free Download
  49. World No 1 Hacker Software
  50. Usb Pentest Tools
  51. Pentest Tools For Ubuntu
  52. Hack Website Online Tool
  53. Hacking Tools For Mac
  54. Hacker Tools For Mac
  55. Hacker Tool Kit
  56. Hack Tools For Games
  57. Pentest Tools List
  58. Hacker Tools 2020
  59. Pentest Tools Tcp Port Scanner
  60. Hack Rom Tools
  61. Hack And Tools
  62. Hack Tools Pc
  63. Tools For Hacker
  64. Termux Hacking Tools 2019
  65. Hacker Tools For Ios
  66. Pentest Tools Github
  67. Hack Tool Apk
  68. Hacking Tools Name
  69. Black Hat Hacker Tools
  70. Hacking Tools Kit
  71. Computer Hacker
  72. Hack Tools For Mac
  73. Best Pentesting Tools 2018
  74. Hack Tool Apk
  75. Hacker Tools Free Download
  76. Hack Tools
  77. Growth Hacker Tools
  78. Pentest Tools For Ubuntu
  79. Hack Tools
  80. Bluetooth Hacking Tools Kali
  81. Hack Tool Apk No Root
  82. Blackhat Hacker Tools
  83. Hacking Tools Pc
  84. Pentest Tools For Ubuntu
  85. Hack Website Online Tool
  86. Pentest Tools Website
  87. Android Hack Tools Github
  88. Hacking Tools Usb
  89. Wifi Hacker Tools For Windows
  90. Hacking Tools Pc
  91. Black Hat Hacker Tools
  92. Hacker Tools Free
  93. Hacking Tools For Windows
  94. Hack Tools For Ubuntu
  95. Hacking App
  96. Hacking Tools For Kali Linux
  97. Hacking Tools Windows
  98. Tools Used For Hacking
  99. Blackhat Hacker Tools
  100. Pentest Tools Website Vulnerability
  101. Nsa Hacker Tools
  102. Hacking Tools For Games
  103. Pentest Tools
  104. Hacking Tools And Software
  105. Pentest Tools Kali Linux
  106. Pentest Tools Website
  107. Hacking Tools 2019
  108. Best Hacking Tools 2019
  109. Wifi Hacker Tools For Windows
  110. Tools Used For Hacking
  111. Pentest Tools Bluekeep
  112. Beginner Hacker Tools
  113. New Hack Tools
  114. Hacker Tools List
  115. Bluetooth Hacking Tools Kali
  116. Hack Rom Tools
  117. Hacker Tools 2019
  118. What Are Hacking Tools
  119. Hack Tools
  120. Android Hack Tools Github
  121. Beginner Hacker Tools
  122. Hack Tools Online
  123. Pentest Box Tools Download
  124. Nsa Hacker Tools
  125. Hacker Tools List
  126. Free Pentest Tools For Windows
  127. Hacker Tools For Ios
  128. Hacker Tools Mac
  129. Android Hack Tools Github
  130. Underground Hacker Sites
  131. Hack Rom Tools
  132. Pentest Tools
  133. Hack And Tools
  134. Hack Tools Mac
  135. Github Hacking Tools
  136. Hacker Tools Software
  137. Hacks And Tools
  138. Hacker Tools Free Download
  139. Hacking Tools For Pc
  140. Nsa Hack Tools
  141. Blackhat Hacker Tools
  142. Hacker Hardware Tools
  143. Hack Tools
  144. Github Hacking Tools
  145. Hak5 Tools
  146. Hacker Tools For Windows

0 Comments:

Post a Comment

<< Home