SELinux是美国国家安全局(NSA)对于强制访问控制的实现,是 Linux历史上最杰出的新安全子系统。但是SELinux的并不能与众多服务很好的兼容,有些人会关闭SELinux一了百了。在日常的运维过程中很少去频繁的开启关闭SElinux,今天我就写一个关闭与开启SELinux的脚本来锻炼我的脚本能力。
脚本代码
#!/bin/bash
# -------------+--------------------
# * Filename : selinux.sh
# * Revision : 2.0
# * Date : 2017-09-02
# * Author : Aubin
# * Description :
# -------------+---------------------
# www.shuaiguoxia.com
#
path=/app/selinux
selinux=`sed -rn "/^(SELINUX=).*\$/p" $path`
case $1 in
enforcing|en)
sed -ri "s@^(SELINUX=).*\$@\1enforcing@g" $path
if [ $selinux == 'SELINUX=disabled' ];then
read -p "SELinux enforcing. you need reboot system ( yes or no ):" input
[ $input == 'yes' -o $input == 'y' ] && reboot || echo "please Manual operation reboot"
else
echo "SELinux enforcing."
fi
;;
permissive|per|pe)
sed -ri "s@^(SELINUX=).*\$@\1permissive@g" $path
if [ $selinux == 'SELINUX=disabled' ];then
read -p "SELinux permissive. you need reboot system ( yes or no ):" input
[ $input == 'yes' -o $input == 'y'] && reboot || echo "please Manual operation reboot"
else
echo "SELINUX permissive"
fi
;;
disabled|dis|di)
sed -ri "s@^(SELINUX=).*\$@\1disabled@g" $path
if [ $selinux == 'SELINUX=enforcing' ];then
read -p "SELinux permissive. you need reboot system ( yes or no ):" input
[ $input == 'yes' -o $input == 'y' ] && reboot || echo "please Manual operation reboot"
else
echo "SELINUX disabled"
fi
;;
l|a)
echo `sed -nr 's@(^SELINUX=.*)@\1@p' $path`
;;
help|--help)
echo "$0 [ enforcing | permissive | disabled ]"
;;
*)
echo "$0 [ enforcing | permissive | disabled ]"
;;
esac
脚本测试
#!/bin/bash
# -------------+--------------------
# * Filename : selinux.sh
# * Revision : 2.0
# * Date : 2017-09-02
# * Author : Aubin
# * Description :
# -------------+---------------------
# www.shuaiguoxia.com
#
path=/app/selinux
selinux=`sed -rn "/^(SELINUX=).*\$/p" $path`
case $1 in
enforcing|en)
sed -ri "s@^(SELINUX=).*\$@\1enforcing@g" $path
if [ $selinux == 'SELINUX=disabled' ];then
read -p "SELinux enforcing. you need reboot system ( yes or no ):" input
[ $input == 'yes' -o $input == 'y' ] && reboot || echo "please Manual operation reboot"
else
echo "SELinux enforcing."
fi
;;
permissive|per|pe)
sed -ri "s@^(SELINUX=).*\$@\1permissive@g" $path
if [ $selinux == 'SELINUX=disabled' ];then
read -p "SELinux permissive. you need reboot system ( yes or no ):" input
[ $input == 'yes' -o $input == 'y'] && reboot || echo "please Manual operation reboot"
else
echo "SELINUX permissive"
fi
;;
disabled|dis|di)
sed -ri "s@^(SELINUX=).*\$@\1disabled@g" $path
if [ $selinux == 'SELINUX=enforcing' ];then
read -p "SELinux permissive. you need reboot system ( yes or no ):" input
[ $input == 'yes' -o $input == 'y' ] && reboot || echo "please Manual operation reboot"
else
echo "SELINUX disabled"
fi
;;
l|a)
echo `sed -nr 's@(^SELINUX=.*)@\1@p' $path`
;;
help|--help)
echo "$0 [ enforcing | permissive | disabled ]"
;;
*)
echo "$0 [ enforcing | permissive | disabled ]"
;;
esac
叨叨叨
- 根据case语句对用户的位置变量(输入的参数)进行判断,进而根据不同的参数实现不同的效果。
- SELinux在enforcing状态与disabled状态切换时必须要进行重启才能生效,所以要在脚本中判断用户之前的SELinux的状态是什么样的,询问用户是否进程重启操作系统。
本文永久更新链接地址:http://www.linuxidc.com/Linux/2017-09/146706.htm