Scripts with loops

Learning outcomes:

• Use a script with a loop to explain how loops works
• Demonstrate how to debug a script with a loop

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• What is a loop
• Loop takes care of repetitive tasks
• Not the same as if/else or case statements
• Use Cases
• Move or delete files over a certain size/age/attribute
• Number manipulation (such as increase all numbers by 1)
• Changing whole folders of files (such as adding time stamps or changing permissions)
• Searching for a value
• Check computer status (such as is the server up)
• Tutorial on Bash Scripting with code examples
• While loops
• While runs as long as condition is successfully executing, stops when condition is false
• Some example use cases might be counting, or reading input
• While loop documentation with example code
• For loops
• Also called a for-each
• Some example use cases might be if you needed to process a sequence or list of items,or work with items from another command such as cat or ls
• For loop documentation with example code
• Until loops
• Similar to the while loop, but the thing happens until the condition is met
• Some use cases might be if you needed a sequence or specific input
• Until loop documentation with example code

Suggested Activities and Discussion Topics:

• Watch This Video and follow along.
• Activity: Listen to This Podcast That was created using AI from these materials. Transcript for the Podcast What are your thoughts? Did the AI do a good job representing the materials? Did you find any mistakes?
• Go through This AI generated study guide, what do you think? Did it capture the week materials well? How did you do on the self quiz? Do you know all the vocab used?
• Go through This AI generated briefing document, what do you think? Did it capture the week materials well? Was there anything it missed? Do you know all the vocab used?

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