My best advice is to copy from another known location.  Either another node which was not effected by the delete, or a new node installed exactly same as node which had items deleted (incase these files might be specific to a node hostname or configuration).   If the files are just common libraries, you should be able to copy from any known location just make sure you get the correct user/permissions after replacing the missing files.   With great power comes great responsibility.  Do not accidentally delete anything which is not backed up. ... View more