In fact, sometimes I just want to realize a copy function from left to right (or from right to left).

[dublove]

I have used a lot of synchronous backup software. It is very complicated. Various settings are compared to compare, which is very difficult to use.
After these software developed in high -end directions, they ignored some basic use.
For example: I sometimes just want to put one file from D:\aa, manually to E:\bb.
Here is just an example. In fact, the path may be complicated.
Note that it is manual, then I am sure, just provide a fast button, and click to complete the job.
But this button sometimes sets up for a long time.

[xCSxXenon]

a batch script is more than likely a way better option to do that