A configuration check fails, and the script must stop at once and report failure to whatever called it using the conventional general-error status. Type the complete command line, builtin and argument, that ends the script this way.
LPIC-1 Exam 102-500, objective 105. Shells and shell scripting medium
Machine-checked — no person has signed for it. This question was read against the source cited below by an automated pass, which found no contradiction. That is a weaker claim than it sounds: the same kind of process wrote the question, so it can confirm its own mistake.
Treat it as a good draft rather than as settled fact, and read the source below before you rely on it. It is not used in mock exams here — only questions a person has signed for are.
How these questions are written — where each question comes from, what the verification ledger records, and what happens when one is found wrong.
Answer
Type the answer.
Accepted answer
exit 1
Case sensitive — Linux is, and grading LS as ls would teach a falsehood.
Why
exit terminates the shell immediately and hands its numeric argument back as the exit status, which the caller then reads in $? or branches on with && and ||. With no argument, exit returns the status of the last command executed, which is easy to get wrong when the last command was a successful echo. Statuses are 8-bit values: 0 means success, 1 is the generic failure convention, and 2 is commonly used for misuse of a command's arguments.
Where this comes from
- Cited
- manual page bash(1)
Practise this
Reading one question is not practice. The trainer will draw a short set from objective 105 and space the ones you get wrong.
More questions on this objective
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