I have been piddling around, trying to learn some shell scripting, so I decided to create a directory in my home directory to store all of my test scripts. I tried to add that directory to my $PATH with:

export PATH=$PATH:/path/to/my/directory

However, when I log out, and log back in, bash doesn't save this change. It acts like the change is only good for the current session. Did I do this wrong, or is this related to my not having a ".bash_profile" file?