python实战简单应用

一、Shell 命令

获取 CPU 信息

转载自: https://blog.csdn.net/qq_21127151/article/details/82195126.

二、Python 代码

1 获取 CPU 信息

获取物理CPU型号

grep 'model name' /proc/cpuinfo | uniq 

In [1]: import subprocess

In [2]: cmd_cpu_name = "grep 'model name' /proc/cpuinfo | uniq"

In [3]: subprocess.getoutput(cmd_cpu_name)
Out[3]: 'model name\t: Intel(R) Xeon(R) Platinum 8163 CPU @ 2.50GHz'

In [4]: cpu_name = subprocess.getoutput(cmd_cpu_name).split(": ")[1]

In [5]: cpu_name
Out[5]: 'Intel(R) Xeon(R) Platinum 8163 CPU @ 2.50GHz'

查看物理CPU颗数

grep 'physical id' /proc/cpuinfo | sort -u | wc -l

In [8]: cmd_cpu_pyc = "grep 'physical id' /proc/cpuinfo | sort -u | wc -l"

In [9]: subprocess.getoutput(cmd_cpu_pyc)
Out[9]: '1'

In [10]: cpu_pyc = subprocess.getoutput(cmd_cpu_pyc)
    
In [11]: cpu_pyc = int(cpu_pyc)

查看每颗物理 CPU 的核心数

grep 'cpu cores' /proc/cpuinfo | uniq   # 每颗 CPU 的核心数，不是总核心数

In [13]: subprocess.getoutput("grep 'cpu cores' /proc/cpuinfo | uniq")
Out[13]: 'cpu cores\t: 1'

In [14]: cpu_cores_each = subprocess.getoutput("grep 'cpu cores' /proc/cpuinfo | uniq")

In [15]: cpu_cores_each = cpu_cores_each.split(": ")[1]

In [16]: cpu_cores_each = int(cpu_cores_each)

In [17]: cpu_cores_each
Out[17]: 1

2 获取 IP 地址信息

In [2]: from subprocess import getoutput

In [3]: ret = getoutput("ip a")

In [4]: ips = []
   ...: for line in ret.splitlines():
   ...:     if 'inet ' in line and '127.0.0.1' not in line:
   ...:         _,ip,*_,net_name = line.split()
   ...:         ips.append([net_name, ip])
   ...:

In [7]: ips
Out[7]: [['ens33', '10.11.59.169/24'], ['ens37', '192.168.8.128/24']]

3 获取硬盘信息

In [8]: from subprocess import getoutput

In [9]: ret = getoutput("lsblk")

In [10]: print(ret)
NAME            MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sda               8:0    0   30G  0 disk
├─sda1            8:1    0    1G  0 part /boot
└─sda2            8:2    0   29G  0 part
  ├─centos-root 253:0    0   27G  0 lvm  /
  └─centos-swap 253:1    0    2G  0 lvm  [SWAP]
sdb               8:16   0    5G  0 disk
sr0              11:0    1  4.3G  0 rom

In [11]: disks = []
    ...: for line in ret.splitlines():
    ...:     if 'disk' in line:
    ...:         dev_name, *_, size, _, _ = line.split()
    ...:         disks.append([dev_name, size])
    ...:

In [12]: disks
Out[12]: [['sda', '30G'], ['sdb', '5G']]