第四周作业：
1. 计算 100 以内所有能被 3 整除的整数之和
2. 编写脚本，求 100 以内所有正奇数之和
3. 随机生成 10 以内的数字，实现猜字游戏，提示比较大或小，相等则退出
4. 编写函数，实现两个数字做为参数，返回最大值
5. 编写一个httpd安装脚本
#!/bin/bash
#Create DIRs
mkdir -p /apps/httpd;mkdir -p /etc/httpd
#Disable Firewalld & SElinux
systemctl disable --now firewalld
sed -i.bak 's/SELINUX=enforcing/SELINUX=disabled/' /etc/selinux/config
#Set Variables
URL="http://apache.mirror.serversaustralia.com.au/httpd/httpd-2.4.43.tar.bz2"
PACKAGE="httpd-2.4.43"
APPDIR=/apps/httpd
CONFIGDIR=/etc/httpd
#Install Dependencies
echo "Installing Dependencies, please wait!"
yum -y install wget gcc make autoconf ncurses-devel bzip2 apr-devel apr-util-devel pcre-devel openssl-devel &> /dev/null
if [ $? -eq 0 ]; then
echo "Installaion Succeed!"
else
echo "Installation Failure!"
exit 1
fi
echo "Installing and Taring!"
wget $URL &> /dev/null &&
tar xvf $PACKAGE.tar.bz2 -C /usr/local/src &> /dev/null
echo "Make and Install..."
cd /usr/local/src/$PACKAGE
./configure --prefix=$APPDIR --sysconfdir=$CONFIGDIR --enable-ssl
make -j 4 && make install
if [ $? -eq 0 ]; then
echo "Make Install Succeed!"
else
echo "Make Install Failure!"
exit 1
fi
sleep 3
echo "Config Env PATH"
echo "PATH=$APPDIR/bin/:$PATH" > /etc/profile.d/httpd.sh
source /etc/profile.d/httpd.sh
echo "set apache as default user"
sed -i.bak 's/User daemon/User apache/;s/Group daemon/Group apache/' $CONFIGDIR/httpd.conf
id apache &> /dev/null
if [ $? -eq 0 ]; then
apachectl start
else
useradd -r -s /sbin/nologin -d /var/www -c Apache -u 66 apache && apachectl start
fi
echo "Check Process and Test"
ps -ef | grep httpd && curl 10.0.0.201