n this problem you will create code to manage a directory tree and provide the user with a basic subset of commands for doing so. We will model this assignment on the Unix command line1 . There are two things to keep track of: the directory tree structure and the current directory that the user is in. Initially, there is only the root directory, which has the empty string for its name. The user may create subdirectories of the current directory (i.e., children) by issuing “mkdir” command; delete subdirectories by issuing “rmdir” command; and change the current directory to a
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