LPIC-1 GNU and Unix Commands Practice Question
Exhibit
0022
Refer to the exhibit. What will be the default permissions of a newly created file using the touch command?
⚠ Common exam trap
Many exam-takers confuse the base permissions (0666) with the final permissions, forgetting to apply the umask, or they mistakenly think touch sets execute bits like a directory creation would.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
-rw-r--r--
The `touch` command creates a file with default permissions determined by the current umask value. On most Linux systems, the default umask is 0022, which subtracts write permissions for group and others from the base permissions of 0666 (rw-rw-rw-), resulting in 0644 (rw-r--r--). Thus, option A is correct.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
-rw-r--r--
Why this is correct
Correct: 666 - 022 = 644, giving owner read/write, group read, others read.
- ✗
-rw-rw-rw-
Why it's wrong here
This would require umask 000.
- ✗
-rwxr-xr-x
Why it's wrong here
This is the default for directories (777-022=755), not files.
- ✗
-rw-rw-r--
Why it's wrong here
This would require umask 002, not 022.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This LPIC-1 practice question is part of Courseiva's free LPI certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the LPIC-1 exam.