netbsd-users: how can i update my installed software?

Subject: how can i update my installed software?
To: None <netbsd-users@netbsd.org>
From: Linyin <linyin.cn@gmail.com>
List: netbsd-users
Date: 03/31/2006 00:03:16

i install the software.but when i update my pkgsrc,the software have new ve=
rsion
how can i update it to the newest version via pkgsrc?
like freebsd,has the portupgrade can do it,but what software can do it
under netbsd?
thanks

--
Linyin SooChow China
MSN:linyin_cn@hotmail.com
WebSite:eaa13.8866.org/~linyin/