Command line file overwrite option.

Hi!
I’m rendering using blender from the command using the command line options. I have looked and googled around, and I have found many options that override the options set in the properties panel, like the output file location, format, even selecting a particular frame, and many more. But I can’t find an command line option that enables or disables the file overwrite option. Does this option exist at all in the command line version of blender? If so, what is it?
Thank you.

I guess the answer in NO. What a pity.