Linux_Advanced Utilities exercise 3.4

I Used the code given in the example solution but for some reason when I type the command one of the three commands I got the following error
bash: forward_backward: command not found

Hi @s.albuqami,

The problem is that you are typing the argument after the script has finished, then when you type forward_backward, bash complains that the command does not exist.

The way you have to call your script is:

./ forward_backward

rather than


# script finished here