云计算学习路线源码框架笔记：while循环结构

以下内容是关于云计算学习路线源码框架笔记内容，下面是关于while循环结构的内容：

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while 条件

do

循环体

done

完善系统工具的输出及可操作性

#!/usr/bin/env bash

#

Author: bavdu

Email: bavduer@163.com

Github: https://github.com/bavdu

Date: 2019//

while 1>0

do

cat <<-EOF

+-------------------------------------------------------------------------+

| System_tools V1.0 |

+-------------------------------------------------------------------------+

| a. Stop And Disabled Firewalld. |

| b. Disabled SELinux Secure System. |

| c. Install Apache Service. |

| d. Quit |

+-------------------------------------------------------------------------+

EOF

printf "\e[1;35m Please input your select: \e[0m" && read var

case "$var" in

"a")

systemctl stop firewalld && systemctl disable firewalld

;;

"b")

sed -ri s/SELINUX=enforcing/SELINUX=disabled/g /etc/selinux/config

;;

"c")

yum -y install httpd httpd-tools

;;

"d")

exit

;;

*)

printf "请按照上方提供的选项输入!!!\n"

;;

esac

if [ $? -eq 0 ];then

clear

else

printf "\e[1;31m Warning: Your program exist ERROR!!! \e[0m\n"

break

fi

done

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