unable to start Myth's database in MacOSX Yosemite

[jgandrade11@…]

After successful installation of Mythtv via Macports, I'm unable to intialize Myth's database despite following the cookbook from ​http://www.mythtv.org/wiki/MacPorts#Terminal_and_PATH
The answer that I get is: command not found.
The folder dvr under opt was not created despite running the command echo export PATH=/opt/dvr/bin:/opt/dvr/sbin:/opt/dvr/lib/mariadb/bin:$PATH" >> ~/.bash_profile. However, after running the command echo $PATH I do get the following:

/opt/dvr/bin:/opt/dvr/sbin:/opt/dvr/lib/mariadb/bin:/opt/local/bin:/opt/local/sbin:/opt/dvr/bin:/opt/dvr/sbin:/opt/dvr/lib/mariadb/bin:/opt/dvr/bin:/opt/dvr/sbin:/opt/dvr/lib/mariadb/bin:/opt/dvr/bin:/opt/dvr/sbin:/opt/dvr/lib/mariadb/bin:/opt/local/bin:/opt/local/sbin:/usr/local/git/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin

Please let me know where to find the log files you need to help me solve this issue. Thanks