查看 cpu 信息

> cat /proc/cpuinfo | grep name | cut -f2 -d: | uniq -c

2  Intel(R) Xeon(R) Platinum 8369B CPU @ 2.70GHz

看到有8个逻辑CPU, 也知道了CPU型号

看 cpu 详细信息

# dmidecode | grep 'Processor Information'

# 查看内存信息
> cat /proc/meminfo

# 查看内核/OS/CPU信息
> uname -a
Linux sfcp-web 3.10.0-1062.18.1.el7.x86_64 #1 SMP Tue Mar 17 23:49:17 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

查看当前操作系统发行版信息

> cat /etc/issue | grep Linux
Red Hat Enterprise Linux AS release 4 (Nahant Update 5)

查看机器型号

> dmidecode | grep "Product Name"
Product Name: Alibaba Cloud ECS

查看系统运行时间、用户数、负载

> uptime
22:51:48 up 108 days,  4:20,  1 user,  load average: 0.01, 0.22, 0.35

查看空闲内存量

> grep MemFree /proc/meminfo
MemFree:          592392 kB

查看内存总量

> grep MemTotal /proc/meminfo
MemTotal:        7862392 kB

查看系统负载

> cat /proc/loadavg
 0.00 0.14 0.30 3/265 13997

显示当前登录系统的用户

> who
root     pts/0        2023-01-02 22:39 (127.0.0.1)

> w
 22:54:54 up 108 days,  4:23,  1 user,  load average: 0.00, 0.12, 0.29
USER     TTY      FROM             LOGIN@   IDLE   JCPU   PCPU WHAT
root     pts/0    127.0.0.1        22:39    6.00s  0.02s  0.00s w