copy all files in dir to anotherdir

[ cp -r dir/* anotherdir ]

copy all directories and subdirectories and files in the foo directory to the foos_backup directory in which you create the directory backup_one which will contain all that is in the foo directory:
[ cp -r foo foos_backup/backup_one ]
to copy filenames with spaces use quotes around them like this: "file name with spaces.txt"