Python运维-获取当前操作系统的各种信息

#通过Python的psutil模块，获取当前系统的各种信息（比如内存，cpu,磁盘，登录用户等），并将信息进行备份
# coding=utf-8

# 获取系统基本信息
import sys
import psutil
import time
import os 

#获取当前时间
time_str =  time.strftime( "%Y-%m-%d", time.localtime( ) )
file_name = "./" + time_str + ".log"

if os.path.exists ( file_name ) == False :
   os.mknod( file_name )
   handle = open ( file_name , "w" )
else :
   handle = open ( file_name , "a" )

#获取命令行参数的个数
if len( sys.argv ) == 1 :
   print_type = 1
else :
   print_type = 2

def isset ( list_arr , name ) :
    if name in list_arr :
       return True
    else :
       return False

print_str = "";

#获取系统内存使用情况
if ( print_type == 1 ) or isset( sys.argv,"mem" )  :
 memory_convent = 1024 * 1024
 mem = psutil.virtual_memory()
 print_str +=  " 内存状态如下:\n"
 print_str = print_str + "   系统的内存容量为: "+str( mem.total/( memory_convent ) ) + " MB\n"
 print_str = print_str + "   系统的内存以使用容量为: "+str( mem.used/( memory_convent ) ) + " MB\n"
 print_str = print_str + "   系统可用的内存容量为: "+str( mem.total/( memory_convent ) - mem.used/( 1024*1024 )) + "MB\n"
 print_str = print_str + "   内存的buffer容量为: "+str( mem.buffers/( memory_convent ) ) + " MB\n"
 print_str = print_str + "   内存的cache容量为:" +str( mem.cached/( memory_convent ) ) + " MB\n"

#获取cpu的相关信息
if ( print_type == 1 ) or isset( sys.argv,"cpu" ) :
 print_str += " CPU状态如下:\n"
 cpu_status = psutil.cpu_times()
 print_str = print_str + "   user = " + str( cpu_status.user ) + "\n"
 print_str = print_str + "   nice = " + str( cpu_status.nice ) + "\n"
 print_str = print_str + "   system = " + str( cpu_status.system ) + "\n"
 print_str = print_str + "   idle = " + str ( cpu_status.idle ) + "\n"
 print_str = print_str + "   iowait = " + str ( cpu_status.iowait ) + "\n"
 print_str = print_str + "   irq = " + str( cpu_status.irq ) + "\n"
 print_str = print_str + "   softirq = " + str ( cpu_status.softirq ) + "\n"
 print_str = print_str + "   steal = " + str ( cpu_status.steal ) + "\n"
 print_str = print_str + "   guest = " + str ( cpu_status.guest ) + "\n"

#查看硬盘基本信息
if ( print_type == 1 ) or isset ( sys.argv,"disk" ) :
 print_str +=  " 硬盘信息如下:\n"
 disk_status = psutil.disk_partitions()
 for item in disk_status :
     print_str = print_str + "   "+ str( item ) + "\n"

#查看当前登录的用户信息
if ( print_type == 1 ) or isset ( sys.argv,"user" ) :
 print_str +=  " 登录用户信息如下:\n "
 user_status = psutil.users()
 for item in  user_status :
     print_str = print_str + "   "+ str( item ) + "\n"

print_str += "---------------------------------------------------------------\n"
print ( print_str )
handle.write( print_str )
handle.close()