An administrator needs to append the output of a Linux command to an existing file for later analysis. Which of the following command-line strings should the administrator use?

The correct answer is D. ls >> file.txt. This command uses output redirection in append mode, adding the command’s output to the end of the existing file without overwriting its current contents.

Automation and Scripting

Question

Options

Acat ls > file.txt
Btcc ls > awk file.txt
Cecho ls | sed -i file.txt
Dls >> file.txt

How the community answered

(28 responses)

A
7% (2)
B
4% (1)
D
89% (25)

Explanation

This command uses output redirection in append mode, adding the command’s output to the end of the existing file without overwriting its current contents.

Topics

#I/O redirection#append operator#shell#output redirection

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