The Book

http://bartsimons.me/manually-add-files-to-owncloud/

First, find your data folder

find / -name config.php 2>/dev/null | while read line ; do cat "$line" | grep " 'datadirectory'" ; done

Now cd to the folder

cd /var/www/owncloud/data

Check the folder content

ls -all

Find the users folder and create a new folder within or move/copy files here

md testfolder