svn co svn://busybox.net/trunk/busybox
If you are not already familiar with using Subversion, I recommend you visit the Subversion website. You might also want to read online or buy a copy of the Subversion Book. If you are already comfortable with using CVS, you may want to skip ahead to the Subversion for CVS Users part of the Subversion Book.
Once you've checked out a copy of the source tree, you can update your source tree at any time so it is in sync with the latest and greatest by entering your BusyBox directory and running the command:
svn updateBecause you've only been granted anonymous access to the tree, you won't be able to commit any changes. Changes can be submitted for inclusion by posting them to the BusyBox mailing list. For those that are actively contributing Subversion commit access can be made available.