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[Music] hello everybody and welcome to another video in this linux or programmers tutorial series in this video were going to be going over environment variables now environment variables are such an important thing that you need to know especially as a programmer and well i want to make an entire video dedicated to them its not going to be that long but i really wanted to go through how they work and just show you guys these things because trust me you need to know these as a programmer and even on other operating systems as well in windows on mac you should understand environment variables and know how to use them anyways lets dive in here i want to start by explaining what an environment variable is then ill show you how to print out environment variables how to access them in a different way and then how to change or set your own so an environment variable is quite simply a variable that is specific to an environment now i know that seems like a very generic explanation but i w