bat 技巧

• 参数 %~p1, %~p2 之类
• for循环的变量，如下

for %%i in ("%test_path%") do (echo %%~pi)

• 时间输出0开始
  https://serverfault.com/questions/147515/need-leading-zero-for-batch-script-using-time-variable

%time: =0%

利用变量值的替换；

https://stackoverflow.com/questions/69068/split-long-commands-in-multiple-lines-through-windows-batch-file

endlocal && call set "exe_path=%exe_path%" ^
         && call set "lib_path=%lib_path%" ^
         && call set "mod_path=%mod_path%" ^
         && call set "pic_path=%pic_path%" ^

https://stackoverflow.com/questions/7105433/windows-batch-echo-without-new-line

:: 不换行
echo|set /p=">                "