How to export to $PATH permanently because .bashrc file doesn't exist in $HOME directory
It should be stored in /Users/username/. To append something to your .bashrc file use 

echo foo &gt;&gt; ~/.bashrc


Make sure to use &gt;&gt; and not &gt;, as the latter will overwrite the file. 

As @fd0 said, you probably want this in your .bash_profile to make sure it loads. I would append to your .bash_profile like this:

echo "export PATH="$HOME/path/added:$PATH"" &gt;&gt; ~/.bash_profile