iftop-流量监控安装（脚本）

 做了个iftop的安装脚本，希望看到的能派上用场.iftop的说明和使用请参看：

 http://en.wikipedia.org/wiki/Iftop

 直接上脚本，脚本里面用说明哦，哈哈，比较粗糙…

#!/bin/bash
echo
"正在检查安装系统依赖包,请稍等……"
yum install -y gcc gcc-c++ libpcap libpcap-devel ncurses ncurses-devel flex byacc
echo
"正在下载iftop主程序包……"
DOWNLOAD=/usr/local/src/
cd ${DOWNLOAD}
wget http:
//www.ex-parrot.com/~pdw/iftop/download/iftop-0.17.tar.gz
echo
"正在解压和编译iftop主程序包…."
tar zxvf iftop-0.17.tar.gz
cd iftop-0.17
./configure
echo "请选择安装
                 继续安装 请输入Y\y
                 退出         请输入N\n
"
read -p
"请根据编号选择(Y\y or N\n).. " SERVER_ID

if [ $SERVER_ID == Y ] || [ $SERVER_ID == y ];then
                SERVER=
"继续安装"
elif [ $SERVER_ID == N ] || [ $SERVER_ID == n ];then
                SERVER=
"Quit"
  exit 5

else
                exit
fi
echo
"安装正在进行中,请稍等…."
make && make install
echo
"安装成功,请使用……"