Processing every argument in order | LPIC-1 102-500 Exam original practice question

105.2Standard

Place each script argument into item once while preserving arguments that contain spaces.

Which for loop is appropriate?

Hint 1: Focus on the requirement

Identify what must change and what must remain unchanged. Then choose the command whose scope matches that requirement.

Hint 2: Check each command's role

Separate commands that display information, change state, remove data, or affect a child process.

for item in "$*"; do process "$item"; done: Incorrect. "$*" joins all arguments into one value, so the loop runs once.
for item in $@; do process "$item"; done: Incorrect. Unquoted $@ can split arguments and expand pathnames.
for item while "$@"; do process "$item"; done: Incorrect. This is not valid for-loop syntax.
for item in "$@"; do process "$item"; done: Correct. Each positional parameter is assigned to item separately.

Detailed explanation

Incorrectfor item in "$*"; do process "$item"; done

Incorrect. "$*" joins all arguments into one value, so the loop runs once.

Incorrectfor item in $@; do process "$item"; done

Incorrect. Unquoted $@ can split arguments and expand pathnames.

Incorrectfor item while "$@"; do process "$item"; done

Incorrect. This is not valid for-loop syntax.

Correctfor item in "$@"; do process "$item"; done

Correct. Each positional parameter is assigned to item separately.

An example you can run in a temporary verification environment.

bash --noprofile --norc -c 'for item in "$@"; do printf "<%s>\n" "$item"; done' demo 'two words' tail

<two words>と<tail>の2行

Foundation review

Check whether the command acts on the current shell, a new process, an existing process, or a file.

Use the supplied command and compare the output with the expected result.

Question IDKP-105-629

EnvironmentGNU Bash 5.2 / 短命シェル

Last technical review2026-08-13