create a user and user file:
binhtpasswd -c pwd-file <username>

add user to user file:
binhtpasswd pwd-file <username>

create bdb repository:
svnadmin create –fs-type bdb <newRepository>
svnadmin create –fs-type fsfs <newRepository>

backup repository:
svnadmin hotcopy path/to/repository path/to/backup –clean-logs