🖥️ System Monitor

A Bash script that monitors CPU, memory, and disk usage on macOS and alerts when thresholds are exceeded.

Built as a learning project to develop skills in shell scripting, system monitoring, and logging — core skills for SRE and DevOps roles.

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Features

• Monitors CPU, memory, and disk usage in real time
• Fires alerts when usage exceeds defined thresholds
• Logs results to a timestamped log file for historical tracking
• Lightweight — no dependencies, pure Bash
• Runs automatically every hour via GitHub Actions CI/CD pipeline
• Compatible with both macOS and Linux

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Usage

1. Clone the repo

git clone https://github.com/evsybut/system-monitor.git
cd system-monitor

2. Make the script executable

chmod +x monitor.sh

3. Run it

./monitor.sh

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Example Output

What I Learned

• Bash scripting and control flow
• Reading system metrics on macOS and Linux
• Cross-platform scripting
• File logging and timestamps
• GitHub Actions CI/CD pipeline configuration
• YAML workflow syntax
• Cron scheduling
• Git and GitHub workflow

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Next Steps

• Add email or Slack alerts when thresholds are breached
• Store results in a database for historical tracking
• Build a simple dashboard to visualise uptime history
• Add more metrics (network usage, running processes)