CMD

Local environment

# list all environment variables  
> set 
> echo %PATH%

## 添加环境变量
# batch文件中, 当前脚本的目录
> SET "SCRIPT_DIR=%~dp0"
> SET "PATH=%SCRIPT_DIR%\x64/vc14/bin;%PATH%"

# help
set /?

system environment variable

setx /m <Variable> <Value>
## append content
### cmd
setx /M PATH "%PATH%;<path to add>"
### powershell
setx /M PATH "$Env:PATH;<path to add>"