linux bash sed指令 sed命令（正则表达式替换）替换/etc/selinux/config参数（SELINUX=enforcing --＞SELINUX=permissive）

Posted 2022-07-20 Dontla

参考文章：shell脚本中sed指令修改指定配置文件的内容

centos7：

/etc/selinux/config

# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
#     enforcing - SELinux security policy is enforced.
#     permissive - SELinux prints warnings instead of enforcing.
#     disabled - No SELinux policy is loaded.
SELINUX=enforcing
# SELINUXTYPE= can take one of three values:
#     targeted - Targeted processes are protected,
#     minimum - Modification of targeted policy. Only selected processes are protected. 
#     mls - Multi Level Security protection.
SELINUXTYPE=targeted 

我们需要将里面SELINUX=enforcing改成SELINUX=permissive

只需运行脚本：

#!/bin/bash

SELINUX_CONF=/etc/selinux/config
cp /etc/selinux/config /etc/selinux/config.bak
sed -i -e "s:SELINUX=.*:SELINUX=permissive:g" $SELINUX_CONF

echo "test success!"