Macport installing sudo: port: command not found

Hi Guys,

When installing MacPort from source i found trouble in this part
port: command not found 
i have found the solution after googling, that easy way.. here's check it out.

nano .bash_profile

add a chunck of code below:

export PATH=$PATH:/opt/local/bin

export MANPATH=$MANPATH:/opt/local/share/man

export INFOPATH=$INFOPATH:/opt/local/share/info

then type this line code

sudo port -v selfupdate

that's all, enjoy!