YvEs2005

1. 

# cd /usr/ports/devel/subversion
# make install clean

If the ports tree is not available, Subversion can be installed as a package:

# pkg_add -r subversion

If pkgng is being used to manage packages, Subversion can be installed with it instead:

# pkg install devel/subversion

2.

# svn checkout http://svn0.us-west.FreeBSD.org/ports/head /usr/ports

3.

To update /usr/ports created in the example above, use:

# svn update /usr/ports

reference :

https://www.freebsd.org/doc/handbook/svn.html