research using some needed commands to develop a shell script that performs the following: N$.$B: Choose the interactive mode so that you can enter input.

a$)$ Write a bash script using loops and arrays that perform the following tasks:

$1.$ Prints a welcoming message that includes your AOU branch name, faculty of computer studies, first and last names, and your ID number. $(3$ mark$)$

$2.$ Fills an array with the command line numeric parameters after checking if each parameter is a valid number:

o$$ If it is a valid number, add it to the array.

o$$ If it is not a valid number, print a message and do not add it to the array.

o$$ Count and print the number of valid and invalid entries.

o$$ Print the highest number in the array. $(8$ marks$)$

b$)$ Write a cronjob that schedules the execution of the above script every Friday at $12$:$00$ PM$.(4$ marks$)$