new with ssh sorry
what was the command to backup www folder thanks

to backup remotely or make a copy?

make copy in a zip or tar folder and then download it by ftp
No problem I got my answer , googled it but one question
is there any ftp software doing it for you?

You can do .tar.gz compression by running below command
tar -czvf foldername.tar.gz foldername
where 'foldername.tar.gz' will be compressed file with .tar.gz formate and 'foldername' is source file/directory.

Thanks easy to do that
but very curious to know if there a any ftp software which
is able to hand this thing?

Are you looking to take the backup within the FTP client ?

FTP protocol does not have the luxury of compressing files on the server. I don't think so if any FTP client would be able to do so. You may find FTP backup clients which may be able to create backups in compressed form on you local machine.

but when I search I see some softwares they claim they can do it

Can you name any. I would like to test them.