In Mac OS X, you can set the environment variables in one of the following files :

  1. ~/.bashrc
  2. ~/.bash_profile
  3. ~/.profile

By default, Mac OS X does not has above files, you need to create it manually.

$PATH example

This example shows you how to set “mongodb/bin” folder to the existing $PATH environment variable.

$ echo $PATH

$ mongo -version
-bash: mongo: command not found

$cd ~
$touch .bash_profile
$vim .bash_profile

export MONGO_PATH=~/mongodb

##restart your terminal
$ mongo -version
MongoDB shell version: 2.0.7

$ echo $PATH