For example, the copy command:
$ cp foo bar cp: overwrite `bar'? n
In older versions of the cp command we could use add '--reply=yes'. This isn't the case anymore:
$ cp --reply=yes foo bar
cp: the --reply option is deprecated; use -i or -f instead
cp: the --reply option is deprecated; use -i or -f instead
Except -f still prompts for interaction.
The solution is to use rsync instead:
$ rsync --ignore-existing foo bar
From: Here