A user is attempting to run a program they have been told is installed on the system. There is no problem with the executable and it is present on the system.However when they attempt to run the program they get the following error:

-bash: : command not found

Where is the command they're trying to run.

explain precisely why the program cannot be found.

what could the sudent do to fix the problem if the command is found in /etc/local/bin