copying of directory

[deaddevil]

I need to write a shellscript, the details of which are given below. Require help to write the code.

I have a folder named original, and a folder named server.
They have almost the same files, but original and server may have files that may be present in one but absent in another.
I want to write a script to copy missing files from server to folder original, but I DO NOT want to overwrite existing files even if there is a date mismatch.

[girishenoy]

U can try by tar those directories.

[Roxoff]

I think for this task you should read the man page for the 'cp' command. Unfortunately this seems to be a homework question, and it's against the rules to post homework questions.

[deaddevil]

its not a homework prob, but its a task i got to do, I have a script to update , but files mostly get overwritten by the updated file, here what I want to do is to skip the files or duplicate files.
help requested.