Linux Basic Monitoring Commands

Below are some commonly used Linux commands for monitoring system performance and retrieving system information:

CPU Monitoring

• top - Displays real-time system summary and process usage.
• htop - Interactive process viewer (requires installation).
• mpstat - Displays CPU usage statistics (part of sysstat package).

RAM Monitoring

• free -h - Shows memory usage in a human-readable format.
• vmstat - Displays memory, CPU, and I/O statistics.

System Serial Number

• sudo dmidecode -t system | grep Serial - Retrieves the system's serial number.

IP Address

• ip addr - Displays IP address and network interface details.
• ifconfig - Shows network configuration (deprecated, use ip).
• hostname -I - Displays the system's IP address.

Other Useful Commands

• df -h - Displays disk space usage in a human-readable format.
• du -sh * - Shows the size of directories and files in the current directory.
• uptime - Displays system uptime and load average.
• dmesg - Prints system boot and kernel messages.
• iostat - Displays CPU and I/O statistics (part of sysstat package).