LondheShubham153 · Amitabh-DevOps · Nov 22, 2024 · Nov 23, 2024 · Nov 25, 2024 · Nov 25, 2024
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diff --git a/2024/day03/solution.md b/2024/day03/solution.md
@@ -3,49 +3,61 @@
 
 Task 1: View the content of a file and display line numbers.
 
-![image](https://github.com/Bhavin213/90DaysOfDevOps/blob/master/2024/day03/image/task%201.png)
+![task1](image/task1.png)
 
 Task 2: Change the access permissions of files to make them readable, writable, and executable by the owner only.
 
-![image](https://github.com/Bhavin213/90DaysOfDevOps/blob/master/2024/day03/image/task%202.png)
+![task2](image/task2.png)
 
 Task 3: Check the last 10 commands you have run.
 
-![image](https://github.com/Bhavin213/90DaysOfDevOps/blob/master/2024/day03/image/task%203.png)
+![task3](image/task3.png)
 
 Task 4: Remove a directory and all its contents.
 
-![image](https://github.com/Bhavin213/90DaysOfDevOps/blob/master/2024/day03/image/task%204.png)
+![task4](image/task4.png)
 
 Task 5: Create a `fruits.txt` file, add content (one fruit per line), and display the content.
 
-![image](https://github.com/Bhavin213/90DaysOfDevOps/blob/master/2024/day03/image/task%205.png)
+![task5](image/task5.png)
 
 Task 6: Add content in `devops.txt` (one in each line) - Apple, Mango, Banana, Cherry, Kiwi, Orange, Guava. Then, append "Pineapple" to the end of the file.
 
-![image](https://github.com/Bhavin213/90DaysOfDevOps/blob/master/2024/day03/image/task%206.png)
-![image](https://github.com/Bhavin213/90DaysOfDevOps/blob/master/2024/day03/image/task%2066.png)
+![task6](image/task6.png)
 
 Task 7: Show the first three fruits from the file in reverse order.
 
-![image](https://github.com/Bhavin213/90DaysOfDevOps/blob/master/2024/day03/image/task%207.png)
+Two ways to do : 
+
+1. ![task7.1](image/task7.1.png)
+
+2. ![task7.2](image/task7.2.png)
+
 
 Task 8: Show the bottom three fruits from the file, and then sort them alphabetically.
 
-![image](https://github.com/Bhavin213/90DaysOfDevOps/blob/master/2024/day03/image/task%208.png)
+Two ways to do : 
+
+1. ![task8.1](image/task8.1.png)
+
+2. ![task8.2](image/task8.2.png)
+
 
 Task 9: Create another file `Colors.txt`, add content (one color per line), and display the content.
 
-![image](https://github.com/Bhavin213/90DaysOfDevOps/blob/master/2024/day03/image/task%209.png)
+![task9](image/task9.png)
 
 Task 10: Add content in `Colors.txt` (one in each line) - Red, Pink, White, Black, Blue, Orange, Purple, Grey. Then, prepend "Yellow" to the beginning of the file.
 
-![image](https://github.com/Bhavin213/90DaysOfDevOps/blob/master/2024/day03/image/task%2010.png)
+![task10](image/task10.png)
 
 Task 11: Find and display the lines that are common between `fruits.txt` and `Colors.txt`.
 
-![image](https://github.com/Bhavin213/90DaysOfDevOps/blob/master/2024/day03/image/task%2011.png)
+![task11](image/task11.png)
 
 Task 12: Count the number of lines, words, and characters in both `fruits.txt` and `Colors.txt`.
 
-![image](https://github.com/Bhavin213/90DaysOfDevOps/blob/master/2024/day03/image/task%2012.png)
+![task12](image/task12.png)
+
+
+hello world
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diff --git a/2024/day04/solution.md b/2024/day04/solution.md
@@ -4,25 +4,25 @@
 Task 1: Explain in your own words and with examples what Shell Scripting means for DevOps.
 - 'Shell Scripting is writing a series of commands in a script file to automate tasks in the Unix/Linux shell. For DevOps, shell scripting is crucial for automating repetitive tasks, managing system configurations, deploying applications, and integrating various tools and processes in a CI/CD pipeline. It enhances efficiency, reduces errors, and saves time.'
 
-Example: Automating server setup
-![image](https://github.com/Bhavin213/90DaysOfDevOps/blob/master/2024/day04/image/task%201.png)
-![image](https://github.com/Bhavin213/90DaysOfDevOps/blob/master/2024/day04/image/task%2011.png)
-
 Task 2: What is `#!/bin/bash`? Can we write `#!/bin/sh` as well?
 - `#!/bin/bash` is called a "shebang" line. It indicates that the script should be run using the Bash shell.
   - `#!/bin/bash`: Uses Bash as the interpreter. It supports advanced features like arrays, associative arrays, and functions.
   - `#!/bin/sh`: Uses the Bourne shell. It’s more POSIX-compliant and is generally compatible with different Unix shells.
 
-![image](https://github.com/Bhavin213/90DaysOfDevOps/blob/master/2024/day04/image/task%202.png)
-
 Task 3: Write a Shell Script that prints `I will complete #90DaysOfDevOps challenge`.
 
-![image](https://github.com/Bhavin213/90DaysOfDevOps/blob/master/2024/day04/image/task%203.png)
+![task3.1](image/task3.1.png)
+
+![task3.2](image/task3.2.png)
 
 Task 4: Write a Shell Script that takes user input, input from arguments, and prints the variables.
 
-![image](https://github.com/Bhavin213/90DaysOfDevOps/blob/master/2024/day04/image/task%204.png)
+![task4.1](image/task4.1.png)
+
+![task4.2](image/task4.2.png)
 
 Task 5: Provide an example of an If-Else statement in Shell Scripting by comparing two numbers.
 
-![image](https://github.com/Bhavin213/90DaysOfDevOps/blob/master/2024/day04/image/task%205.png)
+![task5.1](image/task5.1.png)
+
+![task5.2](image/task5.2.png)
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diff --git a/2024/day05/solution.md b/2024/day05/solution.md
@@ -10,32 +10,137 @@
 
    **Answer**
 
-   ![image](https://github.com/Bhavin213/90DaysOfDevOps/blob/master/2024/day05/image/task%201.png)
-   ![image](https://github.com/Bhavin213/90DaysOfDevOps/blob/master/2024/day05/image/task%201-2.png)
-   ![image](https://github.com/Bhavin213/90DaysOfDevOps/blob/master/2024/day05/image/task%201-3.png)   
+   - Creating createDirectories.sh and adding below content : 
+
+   ``` bash
+
+      #!/bin/bash
+
+      <<Info
+      Author       : Amitabh Soni
+      Date         : 25/11/24
+      Description  : This script takes three arguments and creates a specified number of directories at once.
+
+      Example      : When executed as ./createDirectories.sh day 1 90, it creates 90 directories as day1, day2, day3, ... day90.
+      Info
+
+      # For loop to create directories iteratively
+      for i in $(seq $2 $3); do
+          mkdir "$1$i"
+      done
-      # For loop to create directories iteratively
-      for i in $(seq $2 $3); do
-          mkdir "$1$i"
-      done
+      # Validate number of arguments
+      if [ "$#" -ne 3 ]; then
+          echo "Error: Three arguments required"
+          echo "Usage: $0 directory_name start_num end_num"
+          exit 1
+      fi
+
+      # Validate numeric arguments
+      if ! [[ "$2" =~ ^[0-9]+$ ]] || ! [[ "$3" =~ ^[0-9]+$ ]]; then
+          echo "Error: Second and third arguments must be numbers"
+          exit 1
+      fi
+
+      # Validate range
+      if [ "$3" -lt "$2" ]; then
+          echo "Error: End number must be greater than start number"
+          exit 1
+      fi
+
+      # For loop to create directories iteratively
+      for i in $(seq $2 $3); do
+          mkdir "$1$i"
+      done
-      # For loop to create directories iteratively
-      for i in $(seq $2 $3); do
-          mkdir "$1$i"
-      done
+      # Validate number of arguments
+      if [ "$#" -ne 3 ]; then
+          echo "Error: Three arguments required"
+          echo "Usage: $0 directory_name start_num end_num"
+          exit 1
+      fi
+
+      # Validate numeric arguments
+      if ! [[ "$2" =~ ^[0-9]+$ ]] || ! [[ "$3" =~ ^[0-9]+$ ]]; then
+          echo "Error: Second and third arguments must be numbers"
+          exit 1
+      fi
+
+      # Validate range
+      if [ "$3" -lt "$2" ]; then
+          echo "Error: End number must be greater than start number"
+          exit 1
+      fi
+
+      # For loop to create directories iteratively
+      for i in $(seq $2 $3); do
+          mkdir "$1$i"
+      done
+
+   ```
+
+   ![task1.1](image/task1.1.png)   
+
+
+   - createDirectories.sh
+
+   ![task1.2](image/task1.2.png)   
 
 2. **Create a Script to Backup All Your Work:**
    - Backups are an important part of a DevOps Engineer's day-to-day activities. The video in the references will help you understand how a DevOps Engineer takes backups (it can feel a bit difficult but keep trying, nothing is impossible).
 
    **Answer**
-
-   ![image](https://github.com/Bhavin213/90DaysOfDevOps/blob/master/2024/day05/image/task%202.png)
-   ![image](https://github.com/Bhavin213/90DaysOfDevOps/blob/master/2024/day05/image/task%202-1.png)
+
+   - Creating a `backup.sh` file and executing after adding the below content:
+
+      ```bash
+      #!/bin/bash
+
+      <<Info
+      Author       : Amitabh Soni
+      Date         : 25/11/25
+      Description  : This script will take backup of any directory or file and store it in the backup directory: /home/ubuntu/Day-05/backup
+      Info
+
+      # Creating a function for backup creation
+      function create_backup() {
+          # Timestamp for backup naming
+          timestamp=$(date '+%Y-%m-%d_%H-%M-%S')
+
+          # Target directory where backups are stored
+          target_dir="/home/ubuntu/Day-05/backup"
+
+          # Backup filename
+          backup_file="${target_dir}/backup_${timestamp}.zip"
+
+          # Create zip backup
+          zip -r "$backup_file" "$1"
-          target_dir="/home/ubuntu/Day-05/backup"
-
-          # Backup filename
-          backup_file="${target_dir}/backup_${timestamp}.zip"
-
-          # Create zip backup
-          zip -r "$backup_file" "$1"
+          # Allow override through environment variable
+          target_dir="${BACKUP_DIR:-/home/ubuntu/Day-05/backup}"
+
+          # Ensure backup directory exists
+          mkdir -p "$target_dir" || {
+              echo "Error: Cannot create backup directory"
+              exit 1
+          }
+
+          # Backup filename
+          backup_file="${target_dir}/backup_${timestamp}.zip"
+
+          # Create zip backup
+          zip -r "$backup_file" "$1"
-          target_dir="/home/ubuntu/Day-05/backup"
-
-          # Backup filename
-          backup_file="${target_dir}/backup_${timestamp}.zip"
-
-          # Create zip backup
-          zip -r "$backup_file" "$1"
+          # Allow override through environment variable
+          target_dir="${BACKUP_DIR:-/home/ubuntu/Day-05/backup}"
+
+          # Ensure backup directory exists
+          mkdir -p "$target_dir" || {
+              echo "Error: Cannot create backup directory"
+              exit 1
+          }
+
+          # Backup filename
+          backup_file="${target_dir}/backup_${timestamp}.zip"
+
+          # Create zip backup
+          zip -r "$backup_file" "$1"
+
+          # Checking if the previous command successfully ran or not
+          if [ $? -eq 0 ]; then
+              echo "Backup created: ${backup_file}"
+          else
+              echo "Error: Failed to create backup."
+              return 1
+          fi
+      }
+
+      create_backup "$1"
+
+      ```
+
+   ![task2.1](image/task2.1.png)
+
+
+   - backup.sh : 
+
+   ![task2.2](image/task2.2.png)
+
+
+   - Output image : 
+
+   ![task2.3](image/task2.3.png)
 
 3. **Read About Cron and Crontab to Automate the Backup Script:**
    - Cron is the system's main scheduler for running jobs or tasks unattended. A command called crontab allows the user to submit, edit, or delete entries to cron. A crontab file is a user file that holds the scheduling information.
 
    **Answer**
 
-   ![image](https://github.com/Bhavin213/90DaysOfDevOps/blob/master/2024/day05/image/task%203.png)   
-   ![image](https://github.com/Bhavin213/90DaysOfDevOps/blob/master/2024/day05/image/task%203-1.png) 
+   - Editing crontab for auto backup : 
+
+   ![task3.1](image/task3.1.png)
+
+
+   - setting a backup of Day-04 in every minute : 
+
+   ![task3.2](image/task3.2.png)
+
+
+   - Ensuring whether it creates backup in one minute or not : 
+
+   ![task3.3](image/task3.3.png)
+
+
+   - checking realtime update in backup dir through 'watch ls' command : 
+
+   ![task3.4](image/task3.4.png)
+
+
+   - It works for every minute :
+
+   ![task3.5](image/task3.5.png)
+
+
+   - Final check for backup : 
+
+   ![task3.6](image/task3.6.png)
 
 4. **Read About User Management:**
    - A user is an entity in a Linux operating system that can manipulate files and perform several other operations. Each user is assigned an ID that is unique within the system. IDs 0 to 999 are assigned to system users, and local user IDs start from 1000 onwards.
    - Create 2 users and display their usernames.
 
    **Answer**
 
-   ![image](https://github.com/Bhavin213/90DaysOfDevOps/blob/master/2024/day05/image/task%204.png)
+   - Creating users and printing there names : 
+
+   ![task4.1](image/task4.1.png)
+
+
+   - Setting up password the new users : 
+
+   ![task4.2](image/task4.2.png)
+
 
-[LinkedIn](https://www.linkedin.com/in/bhavin-savaliya/).
+[LinkedIn](https://www.linkedin.com/in/amitabh-devops/).
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