If your a unix/linux/freebsd nerd, it can be tedious to figure out how to refresh

your installed apps repository. In a previous life, I did some sysadmin work on some large (to me) scale FreeBSD servers. To the point; cvsup is a quick command to keep FreeBSD ports in sync. I could never seem to remember this trick, so I wrote it down here.
First, you must install it:
pkg_add -r cvsup-without-gui
Here is the command to refresh the ports tree
/usr/local/bin/cvsup -L 2 -h cvsup10.us.freebsd.org /usr/share/examples/cvsup/ports-supfile
This was found in the FreeBSD Handbook, located here