Critique Shell Script for Credit-Card Program Tech Round

Q: Critique Shell Script for Credit-Card Program Tech Round

This question evaluates understanding of shell scripting and system-level behaviors, focusing on file execution, permissions, variable usage, pipes, exit codes, and potential side effects through a line-by-line critique of a short script.

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Question

Scenario

Tech round for a new credit-card program: candidate is shown a 5-6 line shell script and asked to critique it

Question

What kind of file is "xxx.sh" and how is it executed?

Line-by-line, explain what each command in the provided shell script does.

Hints

Comment on shebang, permissions, variables, pipes, exit codes, and any side-effects.

Critique Shell Script for Credit-Card Program Tech Round

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