Automate Web Server Reload on Configuration File Changes

#!/bin/bash

# Configuration
CONFIG_DIR="/etc/nginx/sites-enabled/" # Or /etc/apache2/sites-enabled/
SERVICE_NAME="nginx"              # Or apache2

# Check if inotifywait is installed
if ! command -v inotifywait &> /dev/null
then
    echo "inotifywait could not be found. Please install inotify-tools (e.g., sudo apt install inotify-tools)."
    exit 1
fi

echo "Monitoring $CONFIG_DIR for changes. Press Ctrl+C to stop."

# Loop indefinitely, watching for file changes
while true; do
    # Wait for any file event (create, modify, delete) in the config directory
    inotifywait -e create -e modify -e delete -e move "$CONFIG_DIR" 2>/dev/null
    
    # A change was detected, attempt to reload the service
    echo "Configuration change detected. Reloading $SERVICE_NAME..."
    sudo systemctl reload "$SERVICE_NAME"
    
    if [ $? -eq 0 ]; then
        echo "$SERVICE_NAME reloaded successfully."
    else
        echo "Failed to reload $SERVICE_NAME. Check logs for errors."
    fi
done