Ultimate useful Linux commands for Monitoring

Here are some essential commands to monitor the health and CPU utilization of your Ubuntu 22.04 server:

1. General System Information

• 
  View system information:
  

  uname -a

• 
  Check uptime and load average:
  

  uptime

• 
  View system memory and swap usage:
  

  free -h

2. CPU Utilization

• 
  Display real-time CPU and memory usage:
  

  top

Press q to exit.

• 
  Better interactive process viewer:
  

  htop

(You may need to install it: sudo apt install htop)

• 
  Display CPU usage statistics:
  

  mpstat 1 5

(Install with: sudo apt install sysstat)

3. Disk Usage

• 
  Check disk space usage:
  

  df -h

• 
  Analyze disk usage in detail:
  

  du -sh *

4. Network Monitoring

• 
  View network statistics:
  

  ifconfig

(Install with: sudo apt install net-tools if not available)

• 
  Monitor network traffic in real-time:
  

  nload

(Install with: sudo apt install nload)

5. System Logs

• 
  View system logs:
  

  journalctl -xe

• 
  Tail system logs in real-time:
  

  tail -f /var/log/syslog

6. Hardware Information

• 
  View CPU information:
  

  lscpu

• 
  Check hardware information:
  

  lshw -short

(Install with: sudo apt install lshw)

7. Resource Monitoring Utilities

• 
  Install sysstat for detailed monitoring tools:
  

  sudo apt install sysstat

Then use commands like:

• 
  iostat (for I/O stats)


• 
  

  sar (system performance stats)

  
  
  
  
  
  • 
    Monitor system resource usage with glances:
    
  
  
  
  
  
  

  sudo apt install glances

  glances

8. Check Running Services

• 
  List running services:
  

  systemctl list-units --type=service --state=running

9. Temperature and Sensors

• 
  Install and check hardware sensors:
  

  sudo apt install lm-sensors

  sudo sensors-detect

  sensors

Would you like a script to combine these into a single health check?