Can it monitor specific processes?

Yes, you can modify the script to monitor specific processes in addition to overall CPU, memory, and disk usage. To achieve this, you can use commands like ps or top with specific filters. Here’s how you can do it:

Monitoring Specific Processes

1. Using ps Command:
   You can use the ps command to check the status of specific processes by their name or PID (Process ID).

   process_name="your_process_name"
   process_info=$(ps aux | grep "$process_name" | grep -v grep)

   This command retrieves information about the specified process. The grep -v grep part excludes the grep command itself from the results.

2. Extracting CPU and Memory Usage:
   You can extract CPU and memory usage for the specific process:

   cpu_usage=$(echo "$process_info" | awk '{print $3}')  # CPU usage percentage
   memory_usage=$(echo "$process_info" | awk '{print $4}')  # Memory usage percentage

3. Threshold Check:
   You can then check if the CPU or memory usage exceeds a predefined threshold:

   if (( $(echo "$cpu_usage > CPU_THRESHOLD" | bc -l) )); then
       send_alert "Process CPU" "$cpu_usage"
   fi
   
   if (( $(echo "$memory_usage > MEMORY_THRESHOLD" | bc -l) )); then
       send_alert "Process Memory" "$memory_usage"
   fi

Example Script Snippet

Here’s how you can integrate this into your existing monitoring script:

while true; do
    # Monitor specific process
    process_name="your_process_name"
    process_info=$(ps aux | grep "$process_name" | grep -v grep)

    if [ -n "$process_info" ]; then
        cpu_usage=$(echo "$process_info" | awk '{print $3}')
        memory_usage=$(echo "$process_info" | awk '{print $4}')

        if (( $(echo "$cpu_usage > CPU_THRESHOLD" | bc -l) )); then
            send_alert "Process CPU" "$cpu_usage"
        fi

        if (( $(echo "$memory_usage > MEMORY_THRESHOLD" | bc -l) )); then
            send_alert "Process Memory" "$memory_usage"
        fi
    fi

    # Other monitoring code (CPU, memory, disk) goes here...

    sleep 2
done

Summary

This modification allows you to monitor specific processes alongside overall system resource usage. You can adjust the process_name variable to target any process you want to monitor. If you have further questions or need assistance with specific implementations, feel free to ask!