[Tutor] check the terminal keyword

[ANKUR AGGARWAL]

i m making a app in which i launch application using os.system("input from
user"). I want to check whether the input entered by the user matches with
the exact keyword in terminal or not.
like i want to launch vlc so user should provide me input as " vlc" in order
to launch the app just like he did from terminal. I want to make a check on
the input spell so that if he type "wlc" it shows an error to it. I have an
little idea abt sys.agrv but don't know how to use it... Plz help me guys.
Thanks in advance
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