“Hi You” Challenge

Create a program named hi that prints Hi there. by default but print Hi <arg>. if there is a command line argument. If a one of two special names (like Linux and Rob) are passed then instead of the default the script should print something special like Woah <arg>, you rock! If a specific insult name (like Dork) is used the script should print Um, no need to be rude.

Requirements

• Must include a safe shebang line if a script.
• When ./hi then prints Hi there.
• When an argument is passed ./hi <name> then prints Hi <name>.
• When ./hi Rob then prints Woah Rob, you rock! only.
• When ./hi Linux then prints Woah Linux, you rock! only.
• When ./hi Dork then prints Um, no need to be rude. only.
• Do not read anything from standard input.
• Use safest, most efficient design, and best practices.
• Be ready to defend your design under peer review.

Bonus

• Write the algorithm first as comments using natural language.
• Validate using language test framework.
• Code it again using switch/case.
• Code it again using else if / elif variations.
• Code it again without any else statements.
• Code it again using a function map design.
• Code it again using short-circuit logical operators.