Recent Lessons

Show all results for ""

Feature Overview

Ace your exams with our all-in-one platform for creating and sharing quizzes and tests.

Quizzes

Create quizzes and tests automatically from your content using AI.

Flashcards

Automatically turn your notes into digital flashcards.

Share, Export & Embed

Share with classmates or export to Excel and your learning management system.

Stats & Reporting

Auto-grading quizzes and tests with detailed stats and reports.

Mobile Apps

The smarter way to study – wherever you are.

Pricing Schools Business

Features Pricing Schools Business

Linux Command Line Pipes and Tail Command

12 Questions

2 Views

Linux Command Line Pipes and Tail Command

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What does the > character do when used to redirect the standard output of a command?

It appends to a file instead of overwriting it

It displays the output on the screen

It redirects standard error instead of standard output

It overwrites any contents of an existing file (correct)

How can the contents of an existing file be preserved when redirecting the standard output of a command?

By using the < character

By using the << character

By using the >> character (correct)

By using the > character

What happens when the number 2 is placed before the arrow > character in redirection?

It redirects standard output to a file

It redirects standard error to a file (correct)

It appends to a file instead of overwriting it

It displays both standard output and standard error on the screen

What does the >> character do when used in redirection?

It appends to a file instead of overwriting it (B) Signup and view all the answers

What does the negative value option (-n) do in the tail command?

Show the specified number of lines from the end of the file (B) Signup and view all the answers

What is the purpose of using the pipe character (|) in command line?

To send the output of one command to another (B) Signup and view all the answers

What is STDIN in I/O redirection?

Standard input, or information entered by the user via the keyboard (A) Signup and view all the answers

How is I/O redirection achieved in command line?

By using the arrow < > characters (A) Signup and view all the answers

What does the ^ character signify in regular expressions?

Beginning of the line (C) Signup and view all the answers

Which command is mentioned as also supporting regular expressions besides the grep command?

more (B) Signup and view all the answers

What does the pattern 'r..f' match in the given example?

Any line that contains the letter r followed by exactly two characters and then the letter f (A) Signup and view all the answers

When would the $ character match in a regular expression pattern?

End of the line (A) Signup and view all the answers