How to set environment variables on Mac OS X

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
/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin
$ mongo -version
-bash: mongo: command not found
$cd ~
$pwd
/Users/mkyong
$touch .bash_profile
$vim .bash_profile
export MONGO_PATH=~/mongodb
export PATH=$PATH:$MONGO_PATH/bin
##restart your terminal
$ mongo -version
MongoDB shell version: 2.0.7
$ echo $PATH
/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/Users/mkyong/mongodb/bin

Done.

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