Object naming options

object
Object.001
Object.002
Object.003

I want to change the suffix Blender adds.

like to
Object001
Object002
Object003

without the period.

I read about it over a decade ago. It was an option, somewhere. IIRC, it could use alphabet and hexidecimal too.

Now I cant find the option.

yes. Batch renaming is coming in 2.81!