Q:

cp -r  .

I run the command cp -r <Folder Name> .<Folder Name>. It have done something, but I cannot find it.
Example:
cp -r Agent .Agent.old    # (There is a dot symbol on the 2nd folder name)

A:

Prefixing the file name with a dot (.) is usually considered as hidden files. This folder copying should have done in the same way.
try to list hidden items by.
ls -la .Agent.old

