A data file uses tabs as field separators, but a downstream process expects spaces. The administrator must replace all tabs with spaces, but only between fields, not within quoted strings that may contain tabs. The file is large, and performance matters. Which approach is most appropriate?

awk -F'\t' '{for(i=1;i output.txt

Use a script that parses the file respecting quotes, replacing only unquoted tabs

sed 's/\t/ /g' data.txt > output.txt

Two unsorted files contain lists of product IDs. The administrator needs to find IDs that are in both files. The files are large, and the administrator wants to use a command that is efficient for this task. Which command should be used?

comm -12 <(sort file1.txt) <(sort file2.txt)

LPI LPIC-1:Linux Administrator (101-500)

Domain 3Objective 2

103.2 Process Text Streams Using Filters LPIC-1 Practice Questions (Page 5)

Part of the Topic 103: GNU and Unix Commands domain, which makes up ~19% of our current practice bank. Linux Professional Institute does not publish an official question count, but from its 90-minute exam (~35–60 total, ~7–11 in this domain), expect 1–1 from this objective — we provide 32 practice questions to prepare you well beyond it. (estimate)

32questions here

7free pages

12concepts

Questions 21–25

21expert · hard
A data file uses tabs as field separators, but a downstream process expects spaces. The administrator must replace all tabs with spaces, but only between fields, not within quoted strings that may contain tabs. The file is large, and performance matters. Which approach is most appropriate?
Select an answer first
22foundation · easy
Which command compares two sorted files and outputs three columns: lines unique to the first file, lines unique to the second file, and lines common to both?
Select an answer first
23expert · hard
Two unsorted files contain lists of product IDs. The administrator needs to find IDs that are in both files. The files are large, and the administrator wants to use a command that is efficient for this task. Which command should be used?
Select an answer first
24foundation · easy
Which command replaces all occurrences of a specified character with another character in a text stream?
Select an answer first
25expert · medium
A document contains paragraphs with lines of varying lengths. The administrator needs to reformat the text to a width of 80 characters, but must preserve existing blank lines between paragraphs and not merge paragraphs. Which command should be used?
Select an answer first

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103.2 Process Text Streams Using Filters LPIC-1 Practice Questions (Page 5)

Questions 21–25

A data file uses tabs as field separators, but a downstream process expects spaces. The administrator must replace all tabs with spaces, but only between fields, not within quoted strings that may contain tabs. The file is large, and performance matters. Which approach is most appropriate?

Which command compares two sorted files and outputs three columns: lines unique to the first file, lines unique to the second file, and lines common to both?

Two unsorted files contain lists of product IDs. The administrator needs to find IDs that are in both files. The files are large, and the administrator wants to use a command that is efficient for this task. Which command should be used?

Which command replaces all occurrences of a specified character with another character in a text stream?

A document contains paragraphs with lines of varying lengths. The administrator needs to reformat the text to a width of 80 characters, but must preserve existing blank lines between paragraphs and not merge paragraphs. Which command should be used?

Keep studying — Topic 103: GNU and Unix Commands