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linux_basics/command_line_basics/index.html

@@ -1223,14 +1223,14 @@ documentation, most commands will have a command-line argument -h or
 most popular documentation system in Linux is called man pages - short
 for manual pages.</p>
 <p>Using --help to show the documentation for ls command.</p>
-<p><img alt="" src="images/linux/commands/image19.png" /></p>
+<p><img alt="" src="../images/linux/commands/image19.png" /></p>
 <h2 id="file-system-organization">File System Organization</h2>
 <p>The linux file system has a hierarchical (or tree-like) structure with
 its highest level directory called root ( denoted by / ). Directories
 present inside the root directory stores file related to the system.
 These directories in turn can either store system files or application
 files or user related files.</p>
-<p><img alt="" src="images/linux/commands/image17.png" /></p>
+<p><img alt="" src="../images/linux/commands/image17.png" /></p>
 <p>bin   | The executable program of most commonly used commands reside in bin directory<br />
   sbin  | This directory contains programs used for system administration.
   home  | This directory contains user related files and directories.
@@ -1262,25 +1262,25 @@ online bash shell.</p>
 <p>At any given moment of time, we will be standing in a certain directory.
 To get the name of the directory in which we are standing, we can use
 the pwd command in linux.</p>
-<p><img alt="" src="images/linux/commands/image2.png" /></p>
+<p><img alt="" src="../images/linux/commands/image2.png" /></p>
 <p>We will now use the cd command to move to a different directory and then
 print the working directory.</p>
-<p><img alt="" src="images/linux/commands/image20.png" /></p>
+<p><img alt="" src="../images/linux/commands/image20.png" /></p>
 <h3 id="cd-change-directory">cd (change directory)</h3>
 <p>The cd command can be used to change the working directory. Using the
 command, you can move from one directory to another.</p>
 <p>In the below example, we are initially in the root directory. we have
 then used the cd command to change the directory.</p>
-<p><img alt="" src="images/linux/commands/image3.png" /></p>
+<p><img alt="" src="../images/linux/commands/image3.png" /></p>
 <h3 id="ls-list-files-and-directories">ls (list files and directories)**</h3>
 <p>The ls command is used to list the contents of a directory. It will list
 down all the files and folders present in the given directory.</p>
 <p>If we just type ls in the shell, it will list all the files and
 directories present in the current directory.</p>
-<p><img alt="" src="images/linux/commands/image7.png" /></p>
+<p><img alt="" src="../images/linux/commands/image7.png" /></p>
 <p>We can also provide the directory name as argument to ls command. It
 will then list all the files and directories inside the given directory.</p>
-<p><img alt="" src="images/linux/commands/image4.png" /></p>
+<p><img alt="" src="../images/linux/commands/image4.png" /></p>
 <h2 id="commands-for-manipulating-files">Commands for Manipulating Files</h2>
 <p>There are four basic commands which are used frequently to manipulate
 files:</p>
@@ -1311,14 +1311,14 @@ the simplest use case of creating a new file.</p>
 <p>General syntax of using touch command</p>
 <pre><code>touch &lt;file_name&gt;
 </code></pre>
-<p><img alt="" src="images/linux/commands/image9.png" /></p>
+<p><img alt="" src="../images/linux/commands/image9.png" /></p>
 <h3 id="mkdir-create-new-directories">mkdir (create new directories)</h3>
 <p>The mkdir command is used to create directories.You can use ls command
 to verify that the new directory is created.</p>
 <p>General syntax of using mkdir command</p>
 <pre><code>mkdir &lt;directory_name&gt;
 </code></pre>
-<p><img alt="" src="images/linux/commands/image11.png" /></p>
+<p><img alt="" src="../images/linux/commands/image11.png" /></p>
 <h3 id="rm-delete-files-and-directories">rm (delete files and directories)</h3>
 <p>The rm command can be used to delete files and directories. It is very
 important to note that this command permanently deletes the files and
@@ -1331,7 +1331,7 @@ run this command with care.</p>
 <p>Let's try to understand the rm command with an example. We will try to
 delete the file and directory we created using touch and mkdir command
 respectively.</p>
-<p><img alt="" src="images/linux/commands/image18.png" /></p>
+<p><img alt="" src="../images/linux/commands/image18.png" /></p>
 <h3 id="cp-copy-files-and-directories">cp (copy files and directories)</h3>
 <p>The cp command is used to copy files and directories from one location
 to another. Do note that the cp command doesn't do any change to the
@@ -1344,14 +1344,14 @@ their copy both co-exist after running cp command successfully.</p>
 command to create a new directory named "test_directory". We will now
 try to copy the "_test_runner.py" file to the directory we created just
 now.</p>
-<p><img alt="" src="images/linux/commands/image23.png" /></p>
+<p><img alt="" src="../images/linux/commands/image23.png" /></p>
 <p>Do note that nothing happened to the original "_test_runner.py" file.
 It's still there in the current directory. A new copy of it got created
 inside the "test_directory".</p>
-<p><img alt="" src="images/linux/commands/image14.png" /></p>
+<p><img alt="" src="../images/linux/commands/image14.png" /></p>
 <p>We can also use the cp command to copy the whole directory from one
 location to another. Let's try to understand this with an example.</p>
-<p><img alt="" src="images/linux/commands/image12.png" /></p>
+<p><img alt="" src="../images/linux/commands/image12.png" /></p>
 <p>We again used the mkdir command to create a new directory called
 "another_directory". We then used the cp command along with an
 additional argument '-r' to copy the "test_directory".</p>
@@ -1368,7 +1368,7 @@ move the files or directories, the original copy is lost.</p>
 already exists in "test_directory". The mv command will just replace it.
 <strong>Do note that the original file doesn't exist in the current directory
 after mv command ran successfully.</strong></p>
-<p><img alt="" src="images/linux/commands/image26.png" /></p>
+<p><img alt="" src="../images/linux/commands/image26.png" /></p>
 <p>We can also use the mv command to move a directory from one location to
 another. In this case, we do not need to use the '-r' flag that we did
 while using the cp command. Do note that the original directory will not
@@ -1377,7 +1377,7 @@ exist if we use mv command.</p>
 directories. Let's see how we can use this command for renaming.</p>
 <p>We have first changed our location to "test_directory". We then use the
 mv command to rename the ""_test_runner.py" file to "test.py".</p>
-<p><img alt="" src="images/linux/commands/image29.png" /></p>
+<p><img alt="" src="../images/linux/commands/image29.png" /></p>
 <h2 id="commands-for-viewing-files">Commands for Viewing Files</h2>
 <p>There are three basic commands which are used frequently to view the
 files:</p>
@@ -1397,7 +1397,7 @@ these commands. You should also practice the given examples on the
 online bash shell.</p>
 <p>We will create a new file called "numbers.txt" and insert numbers from 1
 to 100 in this file. Each number will be in a separate line.</p>
-<p><img alt="" src="images/linux/commands/image21.png" /></p>
+<p><img alt="" src="../images/linux/commands/image21.png" /></p>
 <p>Do not worry about the above command now. It's an advanced command which
 is used to generate numbers. We have then used a redirection operator to
 push these numbers to the file. We will be discussing I/O redirection in the
@@ -1406,7 +1406,7 @@ later sections.</p>
 <p>The most simplest use of cat command is to print the contents of the file on
 your output screen. This command is very useful and can be used for many
 other purposes. We will study about other use cases later.</p>
-<p><img alt="" src="images/linux/commands/image1.png" /></p>
+<p><img alt="" src="../images/linux/commands/image1.png" /></p>
 <p>You can try to run the above command and you will see numbers being
 printed from 1 to 100 on your screen. You will need to scroll up to view
 all the numbers.</p>
@@ -1416,20 +1416,20 @@ can include additional arguments to display as many lines as we want
 from the top.</p>
 <p>In this example, we are only able to see the first 10 lines from the
 file when we use the head command.</p>
-<p><img alt="" src="images/linux/commands/image15.png" /></p>
+<p><img alt="" src="../images/linux/commands/image15.png" /></p>
 <p>By default, head command will only display the first 10 lines. If we
 want to specify the number of lines we want to see from start, use the
 '-n' argument to provide the input.</p>
-<p><img alt="" src="images/linux/commands/image16.png" /></p>
+<p><img alt="" src="../images/linux/commands/image16.png" /></p>
 <h3 id="tail">tail</h3>
 <p>The tail command displays the last 10 lines of the file by default. We
 can include additional arguments to display as many lines as we want
 from the end of the file.</p>
-<p><img alt="" src="images/linux/commands/image22.png" /></p>
+<p><img alt="" src="../images/linux/commands/image22.png" /></p>
 <p>By default, the tail command will only display the last 10 lines. If we
 want to specify the number of lines we want to see from the end, use '-n'
 argument to provide the input.</p>
-<p><img alt="" src="images/linux/commands/image10.png" /></p>
+<p><img alt="" src="../images/linux/commands/image10.png" /></p>
 <p>In this example, we are only able to see the last 5 lines from the file
 when we use the tail command with explicit -n option.</p>
 <h2 id="echo-command-in-linux">Echo Command in Linux</h2>
@@ -1437,7 +1437,7 @@ when we use the tail command with explicit -n option.</p>
 shell. This command is equivalent to what we have <print> in other
 programming languages.</p>
 <p>The echo command prints the given input string on the screen.</p>
-<p><img alt="" src="images/linux/commands/image24.png" /></p>
+<p><img alt="" src="../images/linux/commands/image24.png" /></p>
 <h2 id="text-processing-commands">Text Processing Commands</h2>
 <p>In the previous section, we learned how to view the content of a file.
 In many cases, we will be interested in performing the below operations:</p>
@@ -1470,7 +1470,7 @@ these commands. You should also practice the given examples on the
 online bash shell.</p>
 <p>We will create a new file called "numbers.txt" and insert numbers from 1
 to 10 in this file. Each number will be in a separate line.</p>
-<p><img alt="" src="images/linux/commands/image8.png" /></p>
+<p><img alt="" src="../images/linux/commands/image8.png" /></p>
 <h3 id="grep">grep</h3>
 <p>The grep command in its simplest form can be used to search particular
 words in a text file. It will display all the lines in a file that
@@ -1481,7 +1481,7 @@ an input to the grep command.</p>
 </code></pre>
 <p>In this example, we are trying to search for a string "1" in this file.
 The grep command outputs the lines where it found this string.</p>
-<p><img alt="" src="images/linux/commands/image5.png" /></p>
+<p><img alt="" src="../images/linux/commands/image5.png" /></p>
 <h3 id="sed">sed</h3>
 <p>The sed command in its simplest form can be used to replace a text in a
 file.</p>
@@ -1490,7 +1490,7 @@ file.</p>
 </code></pre>
 <p>Let's try to replace each occurrence of "1" in the file with "3" using
 sed command.</p>
-<p><img alt="" src="images/linux/commands/image31.png" /></p>
+<p><img alt="" src="../images/linux/commands/image31.png" /></p>
 <p>The content of the file will not change in the above
 example. To do so, we have to use an extra argument '-i' so that the
 changes are reflected back in the file.</p>
@@ -1498,10 +1498,10 @@ changes are reflected back in the file.</p>
 <p>The sort command can be used to sort the input provided to it as an
 argument. By default, it will sort in increasing order.</p>
 <p>Let's first see the content of the file before trying to sort it.</p>
-<p><img alt="" src="images/linux/commands/image27.png" /></p>
+<p><img alt="" src="../images/linux/commands/image27.png" /></p>
 <p>Now, we will try to sort the file using the sort command. The sort
 command sorts the content in lexicographical order.</p>
-<p><img alt="" src="images/linux/commands/image32.png" /></p>
+<p><img alt="" src="../images/linux/commands/image32.png" /></p>
 <p>The content of the file will not change in the above
 example.</p>
 <h2 id="io-redirection">I/O Redirection</h2>
@@ -1518,19 +1518,19 @@ output of the command to files or even to the input of other commands.
 I/O redirection is a very powerful feature.</p>
 <p>In the below example, we have used the '&gt;' operator to redirect the
 output of ls command to output.txt file.</p>
-<p><img alt="" src="images/linux/commands/image30.png" /></p>
+<p><img alt="" src="../images/linux/commands/image30.png" /></p>
 <p>In the below example, we have redirected the output from echo command to
 a file.</p>
-<p><img alt="" src="images/linux/commands/image13.png" /></p>
+<p><img alt="" src="../images/linux/commands/image13.png" /></p>
 <p>We can also redirect the output of a command as an input to another
 command. This is possible with the help of pipes.</p>
 <p>In the below example, we have passed the output of cat command as an
 input to grep command using pipe(|) operator.</p>
-<p><img alt="" src="images/linux/commands/image6.png" /></p>
+<p><img alt="" src="../images/linux/commands/image6.png" /></p>
 <p>In the below example, we have passed the output of sort command as an
 input to uniq command using pipe(|) operator. The uniq command only
 prints the unique numbers from the input.</p>
-<p><img alt="" src="images/linux/commands/image28.png" /></p>
+<p><img alt="" src="../images/linux/commands/image28.png" /></p>
 <p>I/O redirection -
 <a href="https://tldp.org/LDP/abs/html/io-redirection.html">https://tldp.org/LDP/abs/html/io-redirection.html</a></p>
 <h2 id="applications-in-sre-role">Applications in SRE Role</h2>

linux_basics/intro/index.html

@@ -1127,7 +1127,7 @@ system by a package manager.</p>
 </tbody>
 </table>
 <h2 id="linux-architecture">Linux Architecture</h2>
-<p><img alt="" src="images/linux/commands/image25.png" /></p>
+<p><img alt="" src="../images/linux/commands/image25.png" /></p>
 <ul>
 <li>
 <p>The Linux kernel is monolithic in nature.</p>

linux_basics/linux_server_administration/index.html

@@ -1454,7 +1454,7 @@ commands on your own.</p>
 <p>We will be running all the commands on Red Hat Enterprise Linux (RHEL) 8 system.</p>
 </li>
 </ul>
-<p><img alt="" src="images/linux/admin/image19.png" /></p>
+<p><img alt="" src="../images/linux/admin/image19.png" /></p>
 <ul>
 <li>We will run most of the commands used in this module in the above docker container.</li>
 </ul>
@@ -1481,10 +1481,10 @@ commands on your own.</p>
 <p>id command can be used to find the uid and gid associated with an user.
 It also lists down the groups to which the user belongs to.</p>
 <p>The uid and gid associated with the root user is 0.
-<img alt="" src="images/linux/admin/image30.png" /></p>
+<img alt="" src="../images/linux/admin/image30.png" /></p>
 <p>A good way to find out the current user in linux is to use the whoami
 command.</p>
-<p><img alt="" src="images/linux/admin/image35.png" /></p>
+<p><img alt="" src="../images/linux/admin/image35.png" /></p>
 <p><strong>"root" user or superuser is the most privileged user with</strong>
 <strong>unrestricted access to all the resources on the system. It has UID 0</strong></p>
 <h3 id="important-files-associated-with-usersgroups">Important files associated with users/groups</h3>
@@ -1506,9 +1506,9 @@ command.</p>
 </tr>
 </tbody>
 </table>
-<p><img alt="" src="images/linux/admin/image23.png" /></p>
-<p><img alt="" src="images/linux/admin/image21.png" /></p>
-<p><img alt="" src="images/linux/admin/image9.png" /></p>
+<p><img alt="" src="../images/linux/admin/image23.png" /></p>
+<p><img alt="" src="../images/linux/admin/image21.png" /></p>
+<p><img alt="" src="../images/linux/admin/image9.png" /></p>
 <p>If you want to understand each filed discussed in the above outputs, you can go
 through below links:</p>
 <ul>
@@ -1543,31 +1543,31 @@ has been created by tailing the /etc/passwd file. The uid and gid are
 1000 for the newly created user. The home directory assigned to the user
 is /home/shivam and the login shell assigned is /bin/bash. Do note that
 the user home directory and login shell can be modified later on.</p>
-<p><img alt="" src="images/linux/admin/image41.png" /></p>
+<p><img alt="" src="../images/linux/admin/image41.png" /></p>
 <p>If we do not specify any value for attributes like home directory or
 login shell, default values will be assigned to the user. We can also
 override these default values when creating a new user.</p>
-<p><img alt="" src="images/linux/admin/image54.png" /></p>
+<p><img alt="" src="../images/linux/admin/image54.png" /></p>
 <h3 id="passwd">passwd</h3>
 <p>The passwd command is used to create or modify passwords for a user.</p>
 <p>In the above examples, we have not assigned any password for users
 'shivam' or 'amit' while creating them.</p>
 <p>\"!!\" in an account entry in shadow means the account of an user has
 been created, but not yet given a password.</p>
-<p><img alt="" src="images/linux/admin/image13.png" /></p>
+<p><img alt="" src="../images/linux/admin/image13.png" /></p>
 <p>Let's now try to create a password for user "shivam".</p>
-<p><img alt="" src="images/linux/admin/image55.png" /></p>
+<p><img alt="" src="../images/linux/admin/image55.png" /></p>
 <p>Do remember the password as we will be later using examples
 where it will be useful.</p>
 <p>Also, let's change the password for the root user now. When we switch
 from a normal user to root user, it will request you for a password.
 Also, when you login using root user, the password will be asked.</p>
-<p><img alt="" src="images/linux/admin/image39.png" /></p>
+<p><img alt="" src="../images/linux/admin/image39.png" /></p>
 <h3 id="usermod">usermod</h3>
 <p>The usermod command is used to modify the attributes of an user like the
 home directory or the shell.</p>
 <p>Let's try to modify the login shell of user "amit" to "/bin/bash".</p>
-<p><img alt="" src="images/linux/admin/image17.png" /></p>
+<p><img alt="" src="../images/linux/admin/image17.png" /></p>
 <p>In a similar way, you can also modify many other attributes for a user.
 Try 'usermod -h' for a list of attributes you can modify.</p>
 <h3 id="userdel">userdel</h3>
@@ -1575,7 +1575,7 @@ Try 'usermod -h' for a list of attributes you can modify.</p>
 user, all the information related to that user will be removed.</p>
 <p>Let's try to delete the user "amit". After deleting the user, you will
 not find the entry for that user in "/etc/passwd" or "/etc/shadow" file.</p>
-<p><img alt="" src="images/linux/admin/image34.png" /></p>
+<p><img alt="" src="../images/linux/admin/image34.png" /></p>
 <h2 id="important-commands-for-managing-groups">Important commands for managing groups</h2>
 <p>Commands for managing groups are quite similar to the commands used for managing users. Each command is not explained  in detail here as they are quite similar. You can try running these commands on your system.</p>
 <table>
@@ -1600,18 +1600,18 @@ not find the entry for that user in "/etc/passwd" or "/etc/shadow" file.</p>
 </tr>
 </tbody>
 </table>
-<p><img alt="" src="images/linux/admin/image52.png" /></p>
+<p><img alt="" src="../images/linux/admin/image52.png" /></p>
 <p>We will now try to add user "shivam" to the group we have created above.</p>
-<p><img alt="" src="images/linux/admin/image33.png" /></p>
+<p><img alt="" src="../images/linux/admin/image33.png" /></p>
 <h2 id="becoming-a-superuser-in-linux">Becoming a Superuser in Linux</h2>
 <p><strong>Before running the below commands, do make sure that you have set up a
 password for user "shivam" and user "root" using the passwd command
 described in the above section.</strong></p>
 <p>The su command can be used to switch users in linux. Let's now try to
 switch to user "shivam".</p>
-<p><img alt="" src="images/linux/admin/image37.png" /></p>
+<p><img alt="" src="../images/linux/admin/image37.png" /></p>
 <p>Let's now try to open the "/etc/shadow" file.</p>
-<p><img alt="" src="images/linux/admin/image29.png" /></p>
+<p><img alt="" src="../images/linux/admin/image29.png" /></p>
 <p>The operating system didn't allow the user "shivam" to read the content
 of the "/etc/shadow" file. This is an important file in linux which
 stores the passwords of users. This file can only be accessed by root or
@@ -1627,30 +1627,30 @@ need to be a part of the sudo group.</p>
 <p><strong>How to provide superpriveleges to other users ?</strong></p>
 <p>Let's first switch to the root user using su command. Do note that using
 the below command will need you to enter the password for the root user.</p>
-<p><img alt="" src="images/linux/admin/image44.png" /></p>
+<p><img alt="" src="../images/linux/admin/image44.png" /></p>
 <p>In case, you forgot to set a password for the root user, type "exit" and
 you will be back as the root user. Now, set up a password using the
 passwd command.</p>
 <p><strong>The file /etc/sudoers holds the names of users permitted to invoke
 sudo</strong>. In redhat operating systems, this file is not present by
 default. We will need to install sudo.</p>
-<p><img alt="" src="images/linux/admin/image3.png" /></p>
+<p><img alt="" src="../images/linux/admin/image3.png" /></p>
 <p>We will discuss the yum command in detail in later sections.</p>
 <p>Try to open the "/etc/sudoers" file on the system. The file has a lot of
 information. This file stores the rules that users must follow when
 running the sudo command. For example, root is allowed to run any
 commands from anywhere.</p>
-<p><img alt="" src="images/linux/admin/image8.png" /></p>
+<p><img alt="" src="../images/linux/admin/image8.png" /></p>
 <p>One easy way of providing root access to users is to add them to a group
 which has permissions to run all the commands. "wheel" is a group in
 redhat linux with such privileges.</p>
-<p><img alt="" src="images/linux/admin/image25.png" /></p>
+<p><img alt="" src="../images/linux/admin/image25.png" /></p>
 <p>Let's add the user "shivam" to this group so that it also has sudo
 privileges.</p>
-<p><img alt="" src="images/linux/admin/image48.png" /></p>
+<p><img alt="" src="../images/linux/admin/image48.png" /></p>
 <p>Let's now switch back to user "shivam" and try to access the
 "/etc/shadow" file.</p>
-<p><img alt="" src="images/linux/admin/image56.png" /></p>
+<p><img alt="" src="../images/linux/admin/image56.png" /></p>
 <p>We need to use sudo before running the command since it can only be
 accessed with the sudo privileges. We have already given sudo privileges
 to user “shivam” by adding him to the group “wheel”.</p>
@@ -1661,11 +1661,11 @@ users and everybody else. This is to make sure that one user is not
 allowed to access the files and resources of another user.</p>
 <p>To see the permissions of a file, we can use the ls command. Let's look
 at the permissions of /etc/passwd file.</p>
-<p><img alt="" src="images/linux/admin/image40.png" /></p>
+<p><img alt="" src="../images/linux/admin/image40.png" /></p>
 <p>Let's go over some of the important fields in the output that are
 related to file permissions.</p>
-<p><img alt="" src="images/linux/admin/image31.jpg" /></p>
-<p><img alt="" src="images/linux/admin/image57.png" /></p>
+<p><img alt="" src="../images/linux/admin/image31.jpg" /></p>
+<p><img alt="" src="../images/linux/admin/image57.png" /></p>
 <h3 id="chmod-command-in-linux">Chmod command in linux</h3>
 <p>The chmod command is used to modify files and directories permissions in
 linux.</p>
@@ -1733,30 +1733,30 @@ allowed and 0 representing False or not allowed.</p>
 </tbody>
 </table>
 <p>We will now create a new file and check the permission of the file.</p>
-<p><img alt="" src="images/linux/admin/image15.png" /></p>
+<p><img alt="" src="../images/linux/admin/image15.png" /></p>
 <p>The group owner doesn't have the permission to write to this file. Let's
 give the group owner or root the permission to write to it using chmod
 command.</p>
-<p><img alt="" src="images/linux/admin/image26.png" /></p>
+<p><img alt="" src="../images/linux/admin/image26.png" /></p>
 <p>Chmod command can be also used to change the permissions of a directory
 in the similar way.</p>
 <h3 id="chown-command-in-linux">Chown command in linux</h3>
 <p>The chown command is used to change the owner of files or
 directories in linux.</p>
 <p>Command syntax: chown \&lt;new_owner> \&lt;file_name></p>
-<p><img alt="" src="images/linux/admin/image6.png" /></p>
+<p><img alt="" src="../images/linux/admin/image6.png" /></p>
 <p><strong>In case, we do not have sudo privileges, we need to use sudo
 command</strong>. Let's switch to user 'shivam' and try changing the owner. We
 have also changed the owner of the file to root before running the below
 command.</p>
-<p><img alt="" src="images/linux/admin/image12.png" /></p>
+<p><img alt="" src="../images/linux/admin/image12.png" /></p>
 <p>Chown command can also be used to change the owner of a directory in the
 similar way.</p>
 <h3 id="chgrp-command-in-linux">Chgrp command in linux</h3>
 <p>The chgrp command can be used to change the group ownership of files or
 directories in linux. The syntax is very similar to that of chown
 command.</p>
-<p><img alt="" src="images/linux/admin/image27.png" /></p>
+<p><img alt="" src="../images/linux/admin/image27.png" /></p>
 <p>Chgrp command can also be used to change the owner of a directory in the
 similar way.</p>
 <h2 id="ssh-command">SSH Command</h2>
@@ -1778,30 +1778,30 @@ Lets not get  into the details of how this authentication works. You can read mo
 <p>Generating public-private key pair  </p>
 <p><strong>If we already have a key pair stored in \~/.ssh directory, we will not need to generate keys again.</strong></p>
 <p>Install openssh package which contains all the commands related to ssh.</p>
-<p><img alt="" src="images/linux/admin/image49.png" /></p>
+<p><img alt="" src="../images/linux/admin/image49.png" /></p>
 <p>Generate a key pair using the ssh-keygen command. One can choose the
 default values for all prompts.</p>
-<p><img alt="" src="images/linux/admin/image47.png" /></p>
+<p><img alt="" src="../images/linux/admin/image47.png" /></p>
 <p>After running the ssh-keygen command successfully, we should see two
 keys present in the \~/.ssh directory. Id_rsa is the private key and
 id_rsa.pub is the public key. Do note that the private key can only be
 read and modified by you.</p>
-<p><img alt="" src="images/linux/admin/image7.png" /></p>
+<p><img alt="" src="../images/linux/admin/image7.png" /></p>
 </li>
 <li>
 <p>Transferring the public key to the remote host</p>
 <p>There are multiple ways to transfer the public key to the remote server.
 We will look at one of the most common ways of doing it using the
 ssh-id-copy command.</p>
-<p><img alt="" src="images/linux/admin/image11.png" /></p>
+<p><img alt="" src="../images/linux/admin/image11.png" /></p>
 <p>Install the openssh-clients package to use ssh-id-copy command.</p>
-<p><img alt="" src="images/linux/admin/image46.png" /></p>
+<p><img alt="" src="../images/linux/admin/image46.png" /></p>
 <p>Use the ssh-id-copy command to copy your public key to the remote host.</p>
-<p><img alt="" src="images/linux/admin/image50.png" /></p>
+<p><img alt="" src="../images/linux/admin/image50.png" /></p>
 <p>Now, ssh into the remote host using the password authentication.</p>
-<p><img alt="" src="images/linux/admin/image51.png" /></p>
+<p><img alt="" src="../images/linux/admin/image51.png" /></p>
 <p>Our public key should be there in \~/.ssh/authorized_keys now.</p>
-<p><img alt="" src="images/linux/admin/image4.png" /></p>
+<p><img alt="" src="../images/linux/admin/image4.png" /></p>
 <p>\~/.ssh/authorized_key contains a list of public keys. The users
 associated with these public keys have the ssh access into the remote
 host.</p>
@@ -1809,10 +1809,10 @@ host.</p>
 </ol>
 <h3 id="how-to-run-commands-on-a-remote-host">How to run commands on a remote host ?</h3>
 <p>General syntax: ssh \&lt;user>@\&lt;hostname/hostip> \&lt;command></p>
-<p><img alt="" src="images/linux/admin/image14.png" /></p>
+<p><img alt="" src="../images/linux/admin/image14.png" /></p>
 <h3 id="how-to-transfer-files-from-one-host-to-another-host">How to transfer files from one host to another host ?</h3>
 <p>General syntax: scp \&lt;source> \&lt;destination></p>
-<p><img alt="" src="images/linux/admin/image32.png" /></p>
+<p><img alt="" src="../images/linux/admin/image32.png" /></p>
 <h2 id="package-management">Package Management</h2>
 <p>Package management is the process of installing and managing software on
 the system. We can install the packages which we require from the linux
@@ -1867,38 +1867,38 @@ systems.</p>
 the successor to YUM which is now used in Fedora for installing and
 managing packages. DNF may replace YUM in the future on all RPM based
 linux distributions.</p>
-<p><img alt="" src="images/linux/admin/image20.png" /></p>
+<p><img alt="" src="../images/linux/admin/image20.png" /></p>
 <p>We did find an exact match for the keyword httpd when we searched using
 yum search command. Let's now install the httpd package.</p>
-<p><img alt="" src="images/linux/admin/image28.png" /></p>
+<p><img alt="" src="../images/linux/admin/image28.png" /></p>
 <p>After httpd is installed, we will use the yum remove command to remove
 httpd package.</p>
-<p><img alt="" src="images/linux/admin/image43.png" /></p>
+<p><img alt="" src="../images/linux/admin/image43.png" /></p>
 <h2 id="process-management">Process Management</h2>
 <p>In this section, we will study about some useful commands that can be
 used to monitor the processes on linux systems.</p>
 <h3 id="ps-process-status">ps (process status)</h3>
 <p>The ps command is used to know the information of a process or list of
 processes.</p>
-<p><img alt="" src="images/linux/admin/image24.png" /></p>
+<p><img alt="" src="../images/linux/admin/image24.png" /></p>
 <p>If you get an error "ps command not found" while running ps command, do
 install <strong>procps</strong> package.</p>
 <p>ps without any arguments is not very useful. Let's try to list all the
 processes on the system by using the below command.</p>
 <p>Reference:
 <a href="https://unix.stackexchange.com/questions/106847/what-does-aux-mean-in-ps-aux">https://unix.stackexchange.com/questions/106847/what-does-aux-mean-in-ps-aux</a></p>
-<p><img alt="" src="images/linux/admin/image42.png" /></p>
+<p><img alt="" src="../images/linux/admin/image42.png" /></p>
 <p>We can use an additional argument with ps command to list the
 information about the process with a specific process ID.</p>
-<p><img alt="" src="images/linux/admin/image2.png" /></p>
+<p><img alt="" src="../images/linux/admin/image2.png" /></p>
 <p>We can use grep in combination with ps command to list only specific
 processes.</p>
-<p><img alt="" src="images/linux/admin/image1.png" /></p>
+<p><img alt="" src="../images/linux/admin/image1.png" /></p>
 <h3 id="top">top</h3>
 <p>The top command is used to show information about linux processes
 running on the system in real time. It also shows a summary of the
 system information.</p>
-<p><img alt="" src="images/linux/admin/image53.png" /></p>
+<p><img alt="" src="../images/linux/admin/image53.png" /></p>
 <p>For each process, top lists down the process ID, owner, priority, state,
 cpu utilization, memory utilization and much more information. It also
 lists down the memory utilization and cpu utilization of the system as a
@@ -1910,28 +1910,28 @@ used to view information about the system memory.</p>
 <p>The free command is used to display the memory usage of the system. The
 command displays the total free and used space available in the RAM
 along with space occupied by the caches/buffers.</p>
-<p><img alt="" src="images/linux/admin/image22.png" /></p>
+<p><img alt="" src="../images/linux/admin/image22.png" /></p>
 <p>free command by default shows the memory usage in kilobytes. We can use
 an additional argument to get the data in human-readable format.</p>
-<p><img alt="" src="images/linux/admin/image5.png" /></p>
+<p><img alt="" src="../images/linux/admin/image5.png" /></p>
 <h3 id="vmstat">vmstat</h3>
 <p>The vmstat command can be used to display the memory usage along with
 additional information about io and cpu usage.</p>
-<p><img alt="" src="images/linux/admin/image38.png" /></p>
+<p><img alt="" src="../images/linux/admin/image38.png" /></p>
 <h2 id="checking-disk-space-in-linux">Checking Disk Space in Linux</h2>
 <p>In this section, we will study about some useful commands that can be
 used to view disk space on linux.</p>
 <h3 id="df-disk-free">df (disk free)</h3>
 <p>The df command is used to display the free and available space for each
 mounted file system.</p>
-<p><img alt="" src="images/linux/admin/image36.png" /></p>
+<p><img alt="" src="../images/linux/admin/image36.png" /></p>
 <h3 id="du-disk-usage">du (disk usage)</h3>
 <p>The du command is used to display disk usage of files and directories on
 the system.</p>
-<p><img alt="" src="images/linux/admin/image10.png" /></p>
+<p><img alt="" src="../images/linux/admin/image10.png" /></p>
 <p>The below command can be used to display the top 5 largest directories
 in the root directory.</p>
-<p><img alt="" src="images/linux/admin/image18.png" /></p>
+<p><img alt="" src="../images/linux/admin/image18.png" /></p>
 <h2 id="daemons">Daemons</h2>
 <p>A computer program that runs as a background process is called a daemon.
 Traditionally, the name of daemon processes ended with d - sshd, httpd
@@ -1946,7 +1946,7 @@ represented by unit configuration files.</p>
 /usr/lib/systemd/system which are distributed by installed RPM packages.
 We are more interested in the configuration file that ends with service
 as these are service units.</p>
-<p><img alt="" src="images/linux/admin/image16.png" /></p>
+<p><img alt="" src="../images/linux/admin/image16.png" /></p>
 <h3 id="managing-system-services">Managing System Services</h3>
 <p>Service units end with .service file extension. Systemctl command can be
 used to start/stop/restart the services managed by systemd.</p>
@@ -1985,7 +1985,7 @@ used to start/stop/restart the services managed by systemd.</p>
 which can be very useful for viewing system logs and applications logs
 in linux. These logs can be very useful when you are troubleshooting on
 the system.</p>
-<p><img alt="" src="images/linux/admin/image58.png" /></p>
+<p><img alt="" src="../images/linux/admin/image58.png" /></p>
 <h2 id="applications-in-sre-role">Applications in SRE Role</h2>
 <ul>
 <li>