A directory contains the single file log2024.txt. Select the THREE shell glob patterns that match that file name.
LPIC-1 Exam 101-500, objective 103. GNU and Unix commands hard
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.
The options
Choose 3.
Not correct log?.txt
Wrong. ? matches exactly ONE character, so this matches log1.txt but not the four digits in log2024.txt.
Correct log*.txt
Correct. * matches any string including an empty one, so it covers 2024.
Not correct log[!0-9]*.txt
Wrong. [!...] is a negated bracket expression: it requires the character after log NOT to be a digit, and here it is 2.
Correct log[0-9]*.txt
Correct. [0-9] matches the single character 2, then * matches the remaining 024.
Correct *2024*
Correct. The literal 2024 is present, the leading * matches log and the trailing * matches .txt. Note this pattern has no .txt requirement, so it would also match a file named report2024.csv.
Why
The shell, not the command, expands globs before the command runs. * matches any string including the empty string, ? matches exactly one character, [abc] and [a-z] match one character from a set or range, and [!abc] (or [^abc]) matches one character NOT in the set. None of them match a leading dot in a file name unless you write it explicitly.
Where this comes from
- Cited
- LPI exam objective 103.3
- What it says
- Use wildcard patterns to match multiple file names.
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
- A user starts a new terminal window in a running graphical desktop session, which launches bash as an interactive shell that is NOT a login shell. Which file in the user's home directory does bash read in that case? machine-checked
- In bash, which history expansion re-runs the entire previous command line? machine-checked
- Which bash command prints the literal five characters $USER instead of the current user name? machine-checked
- You want /opt/bin searched for executables, after all the directories already in PATH, in the current bash session and in every command started from it. Which command does that? machine-checked
- There is a passwd manual page in section 1 (the command) and another in section 5 (the /etc/passwd file format). Which command opens the section 5 page? machine-checked
- Select the TWO true statements about shell variables and the environment in bash. machine-checked