Linux Network Monitoring Script (Enhanced Version)

An enhanced Bash script tool to monitor essential network & system health parameters on Linux (Kali tested) systems.
Tracks real-time network usage, top bandwidth processes, ping health, and basic CPU/RAM status.

Built for lightweight system monitoring needs.

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Tech Stack

• Bash Scripting
• Linux Networking Tools: ifstat, ping, ss, top
• Tested OS: Kali Linux, Ubuntu

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Features

• Show Network Upload/Download Speed
• List Top 5 Bandwidth-Consuming Processes
• Check Ping Status (default 8.8.8.8)
• Monitor CPU & RAM usage stats
• Clean, minimal CLI output

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Script File

Save the script as ➡️ network_monitor_v2.sh

# Make script executable
chmod +x network_monitor_v2.sh

# Run the script
./network_monitor_v2.sh

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Sample Output

========== Network Monitoring =========
Download Speed:  1.23 Mbit/s
Upload Speed:    0.56 Mbit/s

========== Top 5 Bandwidth Processes =========
PID    USER    COMMAND    BANDWIDTH
1234   root    firefox    500 Kbit/s
...

========== Ping Test =========
8.8.8.8 is reachable (20 ms avg)

========== CPU and RAM Stats =========
CPU Usage:  35%
RAM Usage:  45%

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Output

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How It Works

• Uses ifstat for live bandwidth stats
• ss tool to map active network processes
• ping health check to external server
• top command for CPU/RAM utilization

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Skills Gained

• Linux Network Commands
• Bash Scripting Automation
• System Monitoring Basics
• Lightweight CLI tool building

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🔗 Connect

This project is part of my portfolio — showcased on GitHub & LinkedIn.

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