$ ls -l /etc
lrwxr-xr-x   1 root  admin  11 Sep  6 13:53 /etc -> private/etc

$ cat /etc/httpd/httpd.conf

...
DocumentRoot "/Library/WebServer/Documents"
...

$ cat /private/etc/httpd/users/val.conf

https://trac.macports.org/wiki/InstallingMacPorts

http://www.macports.org/install.php

[~ ] $ port search backup

[~ ] $ port list all

[~ ] $ port list name:ftp

[~ ] $ port info bind9

[~ ] $ export EDITOR=vim

[~ ] $ port edit ffmpeg

[~ ] $ sudo port install ffmpeg +lame

[~ ] $ port list installed

[~ ] $ sudo port contents ffmpeg

[~ ] $ sudo port notes bind9

[~ ] $ sudo port -d sync

[~ ] $ sudo port selfupdate

[~ ] $ sudo port upgrade outdated

[~ ] $ sudo port uninstall ffmpeg