Linux Command Line Pipes and Tail Command
12 Questions
2 Views

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?

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

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

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

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

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

What is STDIN in I/O redirection?

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

How is I/O redirection achieved in command line?

<p>By using the arrow &lt; &gt; characters (A)</p> Signup and view all the answers

What does the ^ character signify in regular expressions?

<p>Beginning of the line (C)</p> Signup and view all the answers

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

<p>more (B)</p> Signup and view all the answers

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

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

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

<p>End of the line (A)</p> Signup and view all the answers

More Like This

Linux Command Line Basics Quiz
29 questions
Linux Command Line Basics
12 questions
Linux Command Line Basics
5 questions
Linux Command Line Basics
19 questions

Linux Command Line Basics

MemorablePointillism avatar
MemorablePointillism
Use Quizgecko on...
Browser
Browser