D281 Linux Foundations - Set 3 - Part 1

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

Question 1: Which command is used to show the current disk space usage in human-readable format?

df -h

du -h

ls -h

free -h

Question 2: What is the purpose of the uname command in Linux?

Displays system information

Changes file permissions

Creates a new user

Lists running processes

Question 3: Which of the following commands is used to install software packages in Debian-based systems?

apt-get install

yum install

rpm install

brew install

Question 4: How can you view the contents of a text file in Linux?

cat

mkdir

chmod

Question 5: What does the tail -f command do?

Follows the changes to a file in real-time

Shows the first few lines of a file

Displays the last 100 lines of a file

Displays the file permissions

Question 6: Which command can be used to check the network connection status in Linux?

ping

Question 7: What does the locate command do in Linux?

Finds files by name

Lists directory contents

Displays disk usage

Modifies file permissions

Question 8: How do you search for a file named file.txt in the current directory and its subdirectories?

find . -name file.txt

locate file.txt

grep file.txt

ls -R file.txt

Question 9: What does the useradd command do?

Creates a new user

Displays user information

Deletes a user

Changes a user's password

Question 10: Which command is used to remove a file in Linux?

rmdir

del

erase

Question 11: What does the touch command do in Linux?

Creates a new empty file

Displays file permissions

Moves a file

Deletes a file

Question 12: Which command is used to add a user to a group in Linux?

usermod -aG

chmod

chown

useradd -g

Question 13: How do you delete a directory in Linux, including its contents?

rm -r

rmdir -r

del -d

mv -r

Question 14: What does the free -m command display?

Memory usage in megabytes

Disk usage in megabytes

Free disk space in kilobytes

Process list in megabytes

Question 15: Which command is used to compare two files in Linux?

diff

compare

ls -c

cat

Question 16: What does the history command do?

Displays the list of previously executed commands

Displays the current directory

Lists system logs

Displays file contents

Question 17: Which command is used to reboot the system in Linux?

reboot

shutdown -r

halt

stop

Question 18: How can you display the manual page for a specific command in Linux?

man

info

help

readme

Question 19: What does the chmod 644 command do?

Sets read and write permissions for the owner, and read permissions for the group and others

Deletes a file

Copies a file

Moves a file

Question 20: Which command is used to display running processes in real-time?

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