Adding Environment variables in MAC

Open Terminal

Type cd ~ this will take you to your home directory

Type touch .profile this will create a hidden file named profile

Type open -e .profile this will open the file you just created in TextEdit

In the file, type export PATH=${PATH}:/pathToTheAndroidSdkFolder/android-sdk-mac_86/platform-tools

Save file, close TextEdit, Quit Terminal, and Relaunch Terminal

NOTE: By creating an environment variable you won’t need to cd to the Android/tools folder every time you want to run ADB