编写脚本Apache_port.sh，假设在SELinux关闭的状态下，能够修改Apache服务的端口（默认端口为80）

编写脚本Apache_port.sh，假设在SELinux关闭的状态下，能够修改Apache服务的端口（默认端口为80）

脚本内容：

#!/bin/bash
[ -z "$1" ] && {
        echo "Error: not port number Please give port following scipt"
        exit
}

[ -z "`netstat -antlupe | grep $1`" ] || {
       echo "Error: $1 is used by system proto !!"
       exit
}

[ -e "/etc/httpd/conf/httpd.conf" ] || {
        yum install httpd -y &> /dev/null || {
                echo Error: apache not install and yum repo is not avaliable
                exit
        }
}

sed " /^Listen/c Listen $1" -i /etc/httpd/conf/httpd.conf
systemctl restart httpd > /dev/null && {
        echo "Confiure port sucessful !!"
} || {
        echo "Error: can't up sevice"
}

测试：