Hello ZhangHuangbin,
As far as I see it is using the same Ports-tree than FreeBSD (ftp://ftp.freebsd.org/pub/FreeBSD/ports/amd64/.....)
curerently I have set "Packagesite" to ftp://ftp.freebsd.org/pub/FreeBSD/ports … le/Latest/
(setenv PACKAGESITE "ftp://ftp.freebsd.org/pub/FreeBSD/ports … le/Latest/"), in fact it is FreeBSD, with preistalled KDE (or other choosable UI)
http://www.freebsd.org/projects/newbies.html states:
"PC-BSD is a FreeBSD derivative with a graphical installer and impressive desktop tools aimed at ease of use for the casual computer user."
http://www.pcbsd.org/
Sorry for being a Newbie, but I didn't had a chance to do anything on clean FreeBSD, in a reasonable time, I red some Pages about how to use pkg_add - nothing happend, though I gave up for the Moment.