System Information Retrieval Script

This script retrieves various pieces of system information and displays them in a human-readable format. The information includes public and internal IP addresses, a censored MAC address, top CPU-consuming processes, memory usage, active system services, and the largest files in the /home directory.

Features

• Public IP Address: Retrieves the public IP address using the curl command.
• Internal IP Address: Retrieves the internal IP address using the hostname command.
• Censored MAC Address: Retrieves and censors the MAC address of the default network interface.
• Top CPU Processes: Displays the top 5 processes by CPU usage with formatted headers.
• Memory Usage: Displays the current memory usage in a human-readable format.
• Active System Services: Lists the active system services managed by systemctl.
• Largest Files in /home Directory: Finds and lists the top 10 largest files in the /home directory.

Usage

Running the Script

1. Save the script to a file, e.g., system_info.sh.
2. Make the script executable:

   chmod +x system_info.sh

3. Run the script:

   ./system_info.sh

Script Output

The script will output the following information:

1. Public IP Address: Your external IP address.
2. Internal IP Address: Your internal IP address within the local network.
3. Censored MAC Address: The MAC address with the first three octets censored for privacy.
4. Top CPU Processes: A table of the top 5 processes by CPU usage.
5. Memory Usage: Current memory usage statistics.
6. Active System Services: The first 10 active system services.
7. Largest Files in /home Directory: The top 10 largest files in the /home directory.

Example Output

Dependencies

The script uses the following commands:

• curl
• hostname
• ip
• awk
• ps
• free
• systemctl
• find
• du

Ensure these commands are available on your system before running the script.

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This README provides an overview of the script's functionality, usage instructions, example output, and other relevant information for users.