Tries to update the $PATH automatically.

def update_path(self):
        """
        Tries to update the $PATH automatically.
        """
        if WINDOWS:
            return self.add_to_windows_path()

        # Updating any profile we can on UNIX systems
        export_string = self.get_export_string()

        addition = "\n{}\n".format(export_string)

        updated = []
        profiles = self.get_unix_profiles()
        for profile in profiles:
            if not os.path.exists(profile):
                continue

            with open(profile, "r") as f:
                content = f.read()

            if addition not in content:
                with open(profile, "a") as f:
                    f.write(addition)

                updated.append(os.path.relpath(profile, HOME))