首先安装jdk8（http://www.linuxdiyf.com/linux/23608.html）
其次下载IDEA2016的Linux版本（https://www.jetbrains.com/idea/download/），是个tar.gz包
创建目录
sudo mkdir /usr/local/jetbrains
复制下载好的tar.gz包到这个目录
sudo cp ideaIU-2016.2.5.tar.gz /usr/local/jetbrains/
切换目录并解压
cd /usr/local/jetbrains/
sudo tar -zxvf ideaIU-2016.2.5.tar.gz
创建软链接
sudo ln -s /usr/local/jetbrains/idea-IU-162.2228.15 idea2016
查看安装指导文件
cd idea2016
cat Install-Linux-tar.txt
如果安装指导比较长可以加more或者less命令查看
cat Install-Linux-tar.txt |more
cat Install-Linux-tar.txt |less
这里直接把文件内容贴过来
IntelliJ IDEA
INSTALLATION INSTRUCTIONS
Linux Installation Instructions
1. Unpack the IntelliJ IDEA distribution archive that you downloaded to
where you wish to install the program. We will refer to this destination
location as your {installation home} below.
2. Open a console and cd into "{installation home}/bin" and type:
./idea.sh
to start the application. As a side effect, this will initialize various
configuration files in the ~/.IntelliJIdea2016.2 directory.
3. [OPTIONAL] Add "{installation home}/bin" to your PATH environment
variable so that you may start IntelliJ IDEA from any directory.
4. [OPTIONAL] To adjust the value of the JVM heap size, create
~/.IntelliJIdea2016.2/idea.vmoptions (or idea64.vmoptions
if using a 64-bit JDK), and set the -Xms and -Xmx parameters. To see how
to do this, you can reference the vmoptions file under
"{installation home}/bin" as a model.
[OPTIONAL] Changing the location of "config" and "system" directories
By default, IntelliJ IDEA stores all your settings under the ~/.IntelliJIdea2016.2/config
directory and uses ~/.IntelliJIdea2016.2/system as a data cache.
If you want to change these settings,
1. Open a console and cd into ~/.IntelliJIdea2016.2/
2. Create the file "idea.properties" and open it in an editor. Set the
idea.system.path and/or idea.config.path variables as desired, for
example:
idea.system.path=~/custom/system
idea.config.path=~/custom/config
3. Note that we recommend to store data cache ("system" directory) on a disk
with at least 1GB of free space.
Enjoy!
-IntelliJ IDEA Development Team
大致内容是说切换到bin目录，然后执行./idea.sh就可以用了，配置文件默认放到了~/.IntelliJIdea2016.2/目录，升级版本到时候要注意这个文件夹，反正我是没正常升级过，这个等出来2016.3的正式版再研究。
下面执行
cd bin/
./idea.sh
到这里就算安装完成了。