Question: Write a C program fragment that: Loads the environment variable $USER which set on login to any account. If the value of $USER is root,

Write a C program fragment that:

  1. Loads the environment variable $USER which set on login to any account.
  2. If the value of $USER is "root", create a file exploit in the directory /usr/bin
  3. Change the user permissions of the file so that others can execute the program.
  4. If the user is not root, test whether there already is a file /usr/bin/exploit that the current user can execute.

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