A junior admin runs a script that writes diagnostic messages to standard error. They need to capture both the normal output and the error messages into a single log file, but they also want to see the output on the terminal as it runs. Which command should they use?

script 2> logfile | tee logfile

What is the primary purpose of the pipe character `|` in a Linux command line?

To connect the standard output of one command to the standard input of another

To redirect standard error to a file

To run commands in the background

To separate multiple commands that run sequentially

Which of the following best describes the default source of standard input (stdin) for a command run in an interactive shell?

The standard output of the shell

In the pipeline `cat file.txt | sort | uniq`, what does the `sort` command receive as its input?

The contents of `file.txt` as standard input

The filename `file.txt` as an argument

An administrator runs a script that outputs both normal messages and error messages. They want to save both streams to separate files, while still seeing both on the terminal. Which command should they use?

script 2> >(tee error.log) | tee output.log

script > output.log 2> error.log

script | tee output.log 2> error.log

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

Domain 3Objective 4

103.4 Use Streams, Pipes and Redirects LPIC-1 Practice Questions (Page 1)

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 8 practice questions to prepare you well beyond it. (estimate)

8questions here

2free pages

5concepts

Questions 1–5

1application · medium
A junior admin runs a script that writes diagnostic messages to standard error. They need to capture both the normal output and the error messages into a single log file, but they also want to see the output on the terminal as it runs. Which command should they use?
Select an answer first
2foundation · easy
What is the primary purpose of the pipe character `|` in a Linux command line?
Select an answer first
3foundation · easy
Which of the following best describes the default source of standard input (stdin) for a command run in an interactive shell?
Select an answer first
4foundation · easy
In the pipeline `cat file.txt | sort | uniq`, what does the `sort` command receive as its input?
Select an answer first
5application · hard
An administrator runs a script that outputs both normal messages and error messages. They want to save both streams to separate files, while still seeing both on the terminal. Which command should they use?
Select an answer first

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