exist file only

Hi,

How can I turn on 'exist file only' option in my script???
Please help :roll:

Please read FAQ. If that does not help, come back.

Edit 2021: Use -neveronly switch.
For example with the put command:
https://winscp.net/eng/docs/scriptcommand_put#neweronly

Can you tell me how to turn off\on file exist in WinSCP GUI? I do not see this option.

OK, you are right, this one is not straightforward.
You need to start transfer in GUI, select New and updated files only option, in the Transfer settings dropdown menu select Set as Default and start the transfer.