D281 Linux Foundations - Set 3 - Part 3

Test your knowledge of technical writing concepts with these practice questions. Each question includes detailed explanations to help you understand the correct answers.

Question 41: How do you list all running services in Linux?

systemctl list-units --type=service

ps -e

top

df -s

Question 42: Which command is used to extract .tar.gz archive files?

tar -xzvf

tar -czvf

unzip

gzip -d

Question 43: What does the chmod 755 command do?

Gives read, write, and execute permissions to the owner, and read and execute permissions to others

Removes all permissions from a file

Deletes a file

Changes the owner of a file

Question 44: Which command is used to rename a file in Linux?

rename

chown

Question 45: What does the ln -s command do in Linux?

Creates a symbolic link

Creates a hard link

Deletes a file

Displays file contents

Question 46: Which command is used to switch users in Linux?

sudo

usermod

useradd

Question 47: What does the uptime command display?

How long the system has been running

Current CPU usage

Memory usage

Running processes

Question 48: Which command shows the current working directory in Linux?

pwd

ls -l

Question 49: What is the purpose of the export command in Linux?

Exports environment variables to child processes

Exports a file to a different format

Deletes a file

Displays disk usage

Question 50: Which command is used to display the manual page of a command?

man

help

info

readme

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