I am following the AWS CLI Setup guide. I have managed to successfully install the tool on my Mac OS X terminal with the following output:
Running cmd: /usr/bin/
Try:
PATH=/Users/fr/.local/lib/aws/bin:$PATH
(put it in .profile file)
Also try to install aws cli with homebrew. It will add it to your path automatically.
sometimes while classpath's are messed up on mac - you could always run to fix aws cli locally
$ brew install awscli
which would re-use and update the existing package and set up the right classpath