Portcheckout(1) checks out a FreeBSD port and all runtime
and buildtime depending ports into the current working
directory. The output is written to stdout as an
executable shell-script.
Compiling a FreeBSD port usually require a full tree of ports
in /usr/port. A cvs checkout or a cvs update command takes
a very long time and need much free space.
With portcheckout, you checkout only the parts of the port
tree which you really need. This is a magnitude faster!