The directory structure of an operating system can berepresented by a tree. For example, if we have a directory namedCMPS212 which contains two files, Lab1.cpp and Lab2.cpp, this canbe represented as: CMPS212 Lab1.cpp Lab2.cpp Similarly, if we havea directory named CMPS212 which contains a directory named Lab1 andfile named Lab2.cpp. Also, Lab1 contains two files HelloWorld.cppand HelloWorld.exe. Now, we have the following representation:CMPS212 Lab1 Lab2.cpp HelloWorld.cpp HelloWorld.exe Your task is towrite a Unix.cpp program that simulates the basic functioning ofthe Unix operating system. We will assume that our version of theUnix operating system only has the following commands: cd
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