2025-01-22
| Resource | Command | Description |
|---|---|---|
| CPU Usage | top |
Displays real-time system processes and CPU usage. |
htop |
Enhanced version of top (may require
installation). |
|
mpstat |
CPU usage statistics for each core (from sysstat). |
|
vmstat |
Displays virtual memory statistics (includes CPU). | |
iostat -c |
CPU statistics along with disk I/O. | |
| Memory Usage | free -h |
Displays RAM and swap usage in a human-readable format. |
vmstat |
Displays memory usage and other system stats. | |
ps aux --sort=-%mem |
Lists processes by memory usage. | |
| Disk Usage | df -h |
Shows disk space usage for all mounted filesystems. |
du -sh |
Shows disk usage for a specific directory. | |
iotop |
Interactive real-time I/O monitor (requires root). | |
| Network Usage | iftop |
Displays real-time bandwidth usage by connections. |
nload |
Monitors incoming and outgoing network traffic. | |
netstat -tuln |
Displays network connections, listening ports, etc. | |
ss -tuln |
Shows socket statistics (more efficient than
netstat). |
|
| General Monitoring | sar -u 1 5 |
Collects and reports CPU statistics (requires
sysstat). |
glances |
Provides an overview of system resources (requires pip
installation). |
|
dstat |
General-purpose resource monitor. | |
watch -n 1 |
Runs a command repeatedly at 1-second intervals. | |
| System Performance | systemd-analyze |
Analyzes and reports boot-up performance. |