# Menu driven Python program to execute Linux commands # importing the moduleimport os  # sets the text colour to green os.system("tput setaf 2")  print("Launching Terminal User Interface")  # sets the text color to redos.system("tput setaf 1")  print("\t\tWELCOME TO Terminal User Interface\t\t\t")  # sets the text color to whiteos.system("tput setaf 7")  print("\t-------------------------------------------------")print("Entering local device")while True:    print("""        1.Print date        2.Print cal        3.Configure web        4.Configure docker        5.Add user        6.Delete user        7.Create a file        8.Create a folder        9.Exit""")      ch=int(input("Enter your choice: "))      if(ch == 1):        os.system("date")      elif ch == 2:        os.system("cal")      elif ch == 3:        os.system("yum install httpd -y")        os.system("systemctl start httpd")        os.system("systemctl status httpd")      elif ch == 4:        os.system("yum install docker-ce -y")        os.system("systemctl start docker")        os.system("systemctl status docker")        elif ch == 5:        new_user=input("Enter the name of new user: ")        os.system("sudo useradd {}".format(new_user))        os.system("id -u {}".format(new_user) )                 elif ch == 6:        del_user=input("Enter the name of the user to delete: ")        os.system("sudo userdel {}".format(del_user))      elif ch == 7:        filename=input("Enter the filename: ")        f=os.system("sudo touch {}".format(filename))        if f!=0:            print("Some error occurred")        else:            print("File created successfully")                 elif ch == 8:        foldername=input("Enter the foldername: ")        f=os.system("sudo mkdir {}".format(foldername))        if f!=0:            print("Some error occurred")        else:            print("Folder created successfully")                  elif ch == 9:        print("Exiting application")        exit()    else:        print("Invalid entry")      input("Press enter to continue")    os.system("clear")