zabbix 2.4 install script under the OS of Ubuntu

#!/bin/bash
#
#Description: The scripte of installing zabbix-server
#Author: christian.badguy
#Date: 2015-07-07
#
echo "-----------------------start install zabbix----------------------"
wget http://repo.zabbix.com/zabbix/2.4/ubuntu/pool/main/z/zabbix-release/zabbix-release_2.4-1+trusty_all.deb
dpkg -i zabbix-release_2.4-1+trusty_all.deb
apt-get update
apt-get update --fix-missing
apt-get install zabbix-server-mysql zabbix-frontend-php
if [ $? -ne 0 ];then
echo "install failed ,please check it out!"
exit 1
else
echo "-----------------------modifing the apache2 ----------------------"
echo "ServerName 127.0.0.1:80" >> /etc/apache2/apache2.conf
sed -i 's@;date.timezone =@date.timezone = Asia/shanghai@g' /etc/php5/apache2/php.ini
sed -i 's@max_execution_time = 30@max_execution_time = 600@g' /etc/php5/apache2/php.ini
sed -i 's@max_input_time = 60@max_input_time = 600@g' /etc/php5/apache2/php.ini
sed -i 's@memory_limit = 128M@memory_limit = 256M@g' /etc/php5/apache2/php.ini
sed -i 's@post_max_size = 8M@post_max_size = 32M@g' /etc/php5/apache2/php.ini
sed -i 's@upload_max_filesize = 2M@upload_max_filesize = 16M@g' /etc/php5/apache2/php.ini
service apache2 restart
service zabbix-server restart
echo "-----------------------zabbix server installs sucessfully----------------------"
fi