When you see “Command not found” in the terminal :-

When you see “Command not found” in the terminal :-

Solution :-         
  1. If this error message comes while running the command in the terminal, please follow the process as mentioned below:-

                    

From this error we can understand that the command properly is not copied.

So please check space in  command 
After that even if the problem is not resolved then please contact The CG support team.