Window系统环境变量添加。软件单独安装到一个盘，重装系统后，直接运行bat文件添加每个软件的环境变量。

env_init.bat

REM 系统重装环境变量初始化

REM ----------- dev ------------

REM java
set JAVA_HOME=D:\Java\jdk1.8.0_112
setx /m JAVA_HOME "%JAVA_HOME%"

REM maven
set MAVEN_HOME=D:\apache-maven-3.5.0
setx /m MAVEN_HOME "%MAVEN_HOME%"

REM tomcat
set TOMCAT_HOME=D:\apache-tomcat-8.5.11
setx /m TOMCAT_HOME "%TOMCAT_HOME%"

REM gradle
set GRADLE_BIN=D:\gradle-3.2.1\bin

REM nginx
set NGINX_HOME=D:\nginx-1.13.1

REM nodejs
set NODE_HOME=D:\nodejs

REM pandoc
set PANDOC_HOME=D:\Pandoc

REM python
set PYTHON_HOME=D:\Python\Python36-32

REM ruby
set RUBY_HOME=D:\Ruby24-x64\bin

REM texlive
set TEXLIVE_BIN=D:\texlive\bin\win32

REM ----------- tools ------------
REM vscode
set VSCODE_BIN=D:\Microsoft VS Code Insiders\bin

REM ---------- PATH ------------
setx /m path "%path%;%JAVA_HOME%\bin;%MAVEN_HOME%\bin;%GRADLE_BIN%;%NGINX_HOME%;%NODE_HOME%;%PANDOC_HOME%;%PYTHON_HOME%;%RUBY_HOME%;%TEXLIVE_BIN%;%VSCODE_BIN%"