获取天
@set today=%Date:~3,4%%Date:~8,2%%Date:~11,2%
获取当下时间
@set "now=%Date:~3,4%%Date:~8,2%%Date:~11,2%%TIME:~0,2%%TIME:~3,2%%TIME:~6,2%"
由于直接CMD下和 salt 远程执行 bat 不一致：
cmd 下直接获取 （ 和 salt 执行不一样 ）
@set "now=%DATE:~0,4%%DATE:~5,2%%DATE:~8,2%%TIME:~0,2%%TIME:~3,2%%TIME:~6,2%"