<aside> ⚠️ Weekly test is due this Thursday at 21:00

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<aside> ℹ️ This week, we are still focusing on shell scripting!

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• A COMP2041 student wrote this script, named start_lab04.sh, to run before the Week 4 lab.
• CSE systems have a command, mlalias, which prints information about a specified mail alias. For example:
• CSE system have a command, acc, which prints information about a specified user. For example:
• Use the pipelines from the above 2 questions to write shell commands which print a list of courses taken by COMP2041 students with counts of how many COMP2041 students take each, like this:
• Write a shell script named is_prime.sh which given an integer as an argument, tests whether it is prime and prints a suitable message: