CASE20210510

1.查看主机系统信息

查看系统信息：

[root@CentOS7 ~]# uname --help
Usage: uname [OPTION]...
Print certain system information.  With no OPTION, same as -s.

  -a, --all                print all information, in the following order,
                             except omit -p and -i if unknown:
  -s, --kernel-name        print the kernel name
  -n, --nodename           print the network node hostname
  -r, --kernel-release     print the kernel release
  -v, --kernel-version     print the kernel version
  -m, --machine            print the machine hardware name
  -p, --processor          print the processor type or "unknown"
  -i, --hardware-platform  print the hardware platform or "unknown"
  -o, --operating-system   print the operating system
      --help     display this help and exit
      --version  output version information and exit

GNU coreutils online help: <http://www.gnu.org/software/coreutils/>
For complete documentation, run: info coreutils 'uname invocation'

查看CPU/内存/硬盘详细信息：

[root@CentOS7 ~]# top      #监控Linux系统状况，如CPU、内存；q退出
[root@CentOS7 ~]# cat /proc/cpuinfo #查看CPU详细信息
[root@CentOS7 ~]# lscpu    #查看CPU信息
[root@CentOS7 ~]# free -m  #查看内存占用信息
[root@CentOS7 ~]# df -h    #查看硬盘占用率
[root@CentOS7 ~]# lsblk -f #查看磁盘挂载及文件系统类型

实例：脚本实现信息查看

[root@CentOS7 shellscript]# vim systeminfo.sh
#!/bin/bash
#
#**********************************
# Author:      wanghonron
# Date:        2021-05-10
# FileName:    systeminfo.sh
# Url:         http://www.werda.com
# Copyright(C):2021All rights reserved
#**********************************

echo "OS:         $(uname)"
echo "OS ver:     $(cat /etc/redhat-release | cut -d ' ' -f 2,4)"
echo "HOSTNAME:   $(hostname)"
echo "ipv4 addr:  $(ip a | grep global | cut -d ' ' -f 6)"                                                                    
echo "kernel ver: $(uname -a | cut -d ' ' -f 3)"
echo "CPU model:  $(cat /proc/cpuinfo | grep name | cut -f2 -d :|uniq)"
echo "mem size:   $(free -mh | grep Mem | cut -f12 -d ' ')"
echo "disk size:  $(df -h | grep ^/.* | cut -d ' ' -f1,8)"
[root@CentOS7 shellscript]# sh systeminfo.sh 
OS:         Linux
OS ver:     Linux 7.2.1511
HOSTNAME:   CentOS7.localdomain
ipv4 addr:  10.0.0.7/8
172.17.0.1/16
kernel ver: 3.10.0-327.el7.x86_64
CPU model:   Intel(R) Core(TM) i5-2400 CPU @ 3.10GHz
mem size:   1.8G
disk size:  /dev/sda2 
/dev/sda5 142G
/dev/sda1 997M