FreeBSD provides two complementary technologies for installing third-party software on your system:
Ports - for installing from source
Packages - for installing from pre-built binaries
Either method may be used to install the newest version of your favorite applications from local media or straight off the network.

Ports Setup
vi /etc/make.conf
or
make config-recursive

Upgrade Packages
Update Ports:

pkg_add -r csup
vi /usr/share/example/cvsup/ports-supfile (change CHANGE_THIS.FreeBSD.org to cvsup.tw.freebsd.org)
csup /usr/share/example/cvsup/ports-supfile


Upgrade Ports:

pkg_add -r portupgrade
portupgrade -ai



pkg_add -r freebsd-update
cp /usr/local/etc/freebsd-update.conf.sample /usr/local/etc/freebsd-update.conf
freebsd-update fetch
freebsd-update install


Install a Package
Package:

pkg_add -r xxx
pkg_add xxx.tgz

Ports:

cd /usr/ports/xxx/xxx
make
make install
make clean


Deleting a Package
pkg_delete xxx

delete all depends:
pkg_deinstall -R xxx (from portupgrade)

Query Packages and Files
Finding ports

cd /usr/ports
make search name=xxx


Lists and describes the installed packages:
pkg_info

installed file list:
cat /var/db/pkg/xxx/+CONTENTS

which package contains the installed file:
Way 1:

pkg_add -r portupgrade
pkg_which xxx

Way 2:

cd /var/db/pkg
grep xxx . -r


query depends:
make pretty-print-build-denpends-list
make pretty-print-run-depends-list

System Clean
clean up the temporary work directories:

portsclean -C

delete all the distfiles that are no longer referenced by any ports:

portsclean -D