系统是Ubuntu14.04，安装步骤如下：
1、添加PPA仓库，执行命令：
[java] view plain copy sudo add-apt-repository ppa:cwchien/gradle 2、更新源，执行命令：
[java] view plain copy sudo apt-get update 3、查看可以安装的Gradle版本，执行命令：
[java] view plain copy apt-cache search gradle
我的系统查看结果如下：
[java] view plain copy gradle-doc - Documentation for gradle libgradle-core-java - Groovy based build system - Core library libgradle-plugins-java - Groovy based build system - All plugins missidentify - a program to find win32 applications gradle - Gradle is a Groovy based build system gradle-ppa - Gradle is a Groovy based build system gradle-2.10 - Gradle is a Groovy based build system gradle-2.11 - Gradle is a Groovy based build system gradle-2.12 - Gradle is a Groovy based build system gradle-2.13 - Gradle is a Groovy based build system gradle-2.14 - Gradle is a Groovy based build system gradle-2.14.1 - Gradle is a Groovy based build system gradle-3.0 - Gradle is a Groovy based build system gradle-3.1 - Gradle is a Groovy based build system
4、安装目标版本，我选择安装gradle-3.1，执行命令：
[java] view plain copy sudo apt-get install gradle-3.1
5、需要注意的是，运行gradle3.1需要JDK7及其之上的版本，否则运行会给出如下提示：
[java] view plain copy FAILURE: Build failed with an exception. * What went wrong: Gradle 3.1 requires Java 7 or later to run. You are currently using Java 6.
