FTP - command or setting to set "never overwrite" for a whole session

I'm using Ararat Synapse for Delphi, so if there's a way to set such a mode (or get ls results to a stringlist) I can do it with code. I've looked at the unit code and the dokuwiki and haven't found anything conclusive.

But if there's an FTP command or setting I could use to prevent overwrites (resulting in a GET or PUT not being performed) it would save me a lot of time.

The only way using normal FTP commands that I see right now is to put each file in a folder. Before creating th开发者_运维百科e folder I try to CD to it and PWD the current directory.

In other words, a sort of "sync folders", but only for a specific list of file names.

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There is no such FTP command for what you are asking. You have to implement such logic in your own code. If a file already exists in the destination folder, simply don't issue a GET or PUT command. Use Delphi's FileExists() function to check if a local file exists. Use the FTP LIST, MLST, and/or SIZE command(s) to check if a remote file exists.