python关闭系统服务脚本
我们在初始化系统时需要关闭一些不必要的服务，保留一些我们常用的，比如sshd、network等，要关的系统服务比较多，这时我们需要借用脚本来完成任务。刚自学完python一点基础，只是用来练习~~~~~~
需求：只开启crond|network|sshd|rsyslog|sysstat服务，其余设置为关闭状态
shell脚本实现过程：
#!/bin/bash
for i in `chkconfig --list|grep "3:启用"|awk '{print $1}'|grep -vE "crond|network|sshd|rsyslog|sysstat"`
do
chkconfig $i off
done
Python脚本实现过程：
#!/usr/local/python3/bin/python3
import subprocess
import re
chushi = ["crond","network","sshd","rsyslog","sysstat"]
data = subprocess.getoutput("chkconfig --list")
def file_w(datas):
with open("/tmp/output.txt","w",encoding="utf-8") as f_w:
for line in datas:
f_w.write(line)
f_w.write("\n")
return chushi
def file_r(lis):
guanbi = []
with open("/tmp/output.txt","r",encoding="utf-8") as f_r:
for line in f_r:
#print(line.strip())
valu = re.search("\w+",line.strip()).group()
#print(valu)
if valu not in lis:
guanbi.append(valu)
else:
pass
return guanbi
def send_os(gb):
for item in gb:
subprocess.getoutput("chkconfig %s off" % item)
a = file_w(data)
b = file_r(a)
send_os(b)
基本的思路：先把所有的系统服务列表输出到文件，然后进行读取，和需要开启服务的列表做匹配，再调用系统命令进行关闭
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