写个自动下载安装Ant的shell脚本【一】

#!/bin/bash

######################################################
#   file name: install_ant.sh
#
#   function:
#   To quickly install ant automatically
#   in linux system...
#
#   author:    jeffzhao
#   date:      2013.6.19
#
#
#
######################################################
ant_package_path="./"
ant_install_path="/opt/test/ant"
ant_package_name="apache-ant-1.9.1-bin.tar.gz"
ant_download_url="http://www.apache.org/dist/ant/binaries"/${ant_package_name}
antMD5_download_url="http://www.apache.org/dist/ant/binaries"/${ant_package_name}.md5
######################################################
#
#
######################################################

function download_ant()
{
wget ${ant_download_url}
wget ${antMD5_download_url}
}

function check_env()
{
# To Make Sure Ant Pakcage Path is Ok
if [ ! -d ${ant_package_path} ]
then
mkdir -p ${ant_package_path}
fi

# To Make Sure Ant Pakcage is OK

ls -l ${ant_package_path}|grep *ant*.tar.gz

if [ $? == 1 ]
then
download_ant
fi
}

function main()
{
echo "Preinstall Checking start"
check_env
}

main