Type the complete tar command that creates the bzip2-compressed archive /backup/etc.tar.bz2 from the directory /etc, using single-letter options.
LPIC-1 Exam 101-500, objective 103. GNU and Unix commands 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 answers
tar -cjf /backup/etc.tar.bz2 /etctar cjf /backup/etc.tar.bz2 /etctar -jcf /backup/etc.tar.bz2 /etctar jcf /backup/etc.tar.bz2 /etctar -c -j -f /backup/etc.tar.bz2 /etctar -j -c -f /backup/etc.tar.bz2 /etc
Case sensitive — Linux is, and grading LS as ls would teach a falsehood.
Why
-c creates the archive, -j filters it through bzip2, and -f names the file to write; the archive name must follow -f immediately, and the paths to archive come last. Swapping -j for -z would produce gzip compression and -J would produce xz. tar also accepts the historic form without a leading dash, so `tar cjf` is the same command as `tar -cjf`.
Where this comes from
- Cited
- manual page tar(1)
Practise this
Reading one question is not practice. The trainer will draw a short set from objective 103 and space the ones you get wrong.
More questions on this objective
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