System status view
ps
ps -ax
ps -aux
ps -aux | grep wps
top
real time monitoring
| Order | describe |
|---|---|
| [space] | Refresh display now |
| h | show help screen |
| k | kill a process |
| n | Change the number of processes to display |
| u | sort by user |
| M | sort by memory usage |
| P | By CPU usage |
| q | exit top |
%CPU us【用户】 sy【系统】 ni id wa hi si st
free
View system free and used memory
free # 默认，字节，byte为单位
free -m #M为单位
free -h #G为单位
blkid
Display the underlying information of available block devices
View disk usage status
1 - 需要 root 权限；非 root用户，使用 lsblk
blkid #显示所有块设备的可用属性，如UUID、文件系统类型等
blkid /dev/sda #显示指定块设备的可用属性
lsblkvery useful! ! !
df
View file system
df -Th #h为了以G单位显示
df -h
of
view file size
The du command may soar the load of the server, it is recommended not to use the server with high load
du -h # G 为单位
du -sh