The RHCSA doesn't test you on clever shell scripting — it tests you on basic shell scripting: can you write a 10-line bash script that takes an argument, checks whether a file exists, loops over a list, and exits with a meaningful status code? That's the bar. The skills this topic covers: writing a proper shebang, reading positional arguments ($1, $2, "$@"), variables and command substitution, test expressions in if/then/else, for and while loops, and setting a correct exit code. Every script you write on the exam should be executable (chmod +x) and should live under /usr/local/bin or wherever the task says.
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