Memory-Usage-Monitor-Shell-Scripting

A shell script to monitor system memory usage with email alerts, audio notifications, and TSV logging.

Features

• Real-time memory usage monitoring
• Email alerts when memory usage exceeds threshold
  • Includes top 5 memory-consuming processes and their usage percentages
  • Automated process monitoring and reporting
• Audio notifications using espeak
• Detailed logging in TSV format
• Automated monitoring through cron jobs

Prerequisites

Required Packages

# For Debian/Ubuntu
sudo apt-get install sendmail espeak bc

# For Red Hat/CentOS
sudo yum install sendmail espeak bc

Installation

1. Clone the repository:

git clone https://github.com/yourusername/memory-monitor.git
cd memory-monitor

2. Make the script executable:

chmod +x memory_monitor.sh

3. Configure the script:

• Open memory_monitor.sh and set:

  EMAIL="your_email@example.com"    # Your email address
  THRESHOLD=90                      # Memory threshold percentage
  LOG_FILE="mem_report.tsv"        # Log file location

Usage

Manual Execution

./memory_monitor.sh

Automated Monitoring

Set up hourly monitoring using crontab:

# Open crontab editor
crontab -e

# Add this line
0 * * * * /path/to/memory_monitor.sh

# Verify cron job
crontab -l

Output Examples

Normal Operation

Memory usage: 72.45%
Memory usage logged to mem_report.tsv

Alert Condition

Alert email sent! Memory usage: 92.33%
Memory usage logged to mem_report.tsv
[Voice Alert]: "Warning! Memory usage is at 92.33 percent"

Email Alert Format

Subject: Memory Alert: High Usage Detected

Warning: Memory usage is at 92.33%

Top Memory-Consuming Processes (Process:Memory%):
chrome:15.2%|firefox:8.5%|mysql:6.7%|nodejs:4.2%|python:3.8%|

Log File Format (mem_report.tsv)

Timestamp               Memory_Usage(%)    Alert_Status
2024-12-23 14:00:00    72.45             OK
2024-12-23 15:00:00    92.33             ALERT
2024-12-23 16:00:00    85.67             OK

Troubleshooting

Email Alerts

1. Check sendmail status:

systemctl status sendmail

2. Test email:

echo "Test" | mail -s "Test" your_email@example.com

Audio Alerts

1. Check espeak:

espeak "Test message"

Cron Jobs

1. Check cron service:

systemctl status cron

2. View cron logs:

grep CRON /var/log/syslog