Command Line - Commands + Clarifiers

Question 1

Which command is used to change directories?

Answer 1

cd
cd /Desktop

Question 2

Which command creates a new file in the command line?

Answer 2

touch
touch newfile.txt

Question 3

Which command creates a new directory (folder) in the command line?

Answer 3

mkdir
mkdir myFolder

Question 4

Which command displays a list of previously entered commands?

Answer 4

history
history

Question 5

Which command opens files in VS Code from the command line?

Answer 5

code
code example.js

Question 6

Which command lists the contents of the current directory?

Answer 6

ls
ls -l

Question 7

Which command copies files or directories?

Answer 7

cp
cp file.txt /newlocation/

Question 8

Which command moves or renames files or directories?

Answer 8

mv
mv oldname.txt newname.txt

Question 9

Which command removes files or directories?

Answer 9

rm
rm file.txt or rm -r myFolder

Question 10

Which command displays the contents of a file?

Answer 10

cat
cat file.txt

Question 11

Which command shows the current working directory?

Answer 11

pwd
pwd

Question 12

Which command prints a message or variable value?

Answer 12

echo
echo ‘Hello, World!’

Question 13

Which command searches for patterns in files?

Answer 13

grep
grep ‘pattern’ file.txt

Question 14

Which command searches for files and directories based on criteria?

Answer 14

find
find /path -name ‘file.txt’

Question 15

Which command changes file or directory permissions?

Answer 15

chmod
chmod 755 file.txt

Question 16

Which command changes file ownership?

Answer 16

chown
chown user:group file.txt

Question 17

Which command creates or extracts an archive file?

Answer 17

tar
tar -cvf archive.tar file1 file2

Question 18

Which command compresses files, and which command extracts them?

Answer 18

zip / unzip
zip archive.zip file1 file2 / unzip archive.zip

Question 19

Which command allows a user to execute commands with superuser privileges?

Answer 19

sudo
sudo apt-get update

Question 20

Which command displays currently running processes?

Answer 20

ps
ps aux

Question 21

Which command terminates a process?

Answer 21

kill
kill 1234

Question 22

Which command shows real-time system processes and resource usage?

Answer 22

top
top

Question 23

Which command shows the available and used disk space?

Answer 23

df
df -h

Question 24

Which command shows the disk usage of files and directories?

Answer 24

du
du -sh /directory/

Question 25

Which commands are used to edit files in the command line?

Answer 25

nano / vim nano file.txt / vim file.txt

Question 26

Which command downloads files from the web?

Answer 26

wget wget http://example.com/file.zip

Question 27

Which command transfers data to or from a server using protocols like HTTP or FTP?

Answer 27

curl curl http://example.com

Question 28

Which command securely copies files between hosts over a network?

Answer 28

scp scp file.txt user@remote:/path/

Question 29

Which command synchronizes files and directories between two locations?

Answer 29

rsync rsync -avz /source/ /destination/

Question 30

Which command checks the network connection between your machine and a host?

Answer 30

ping ping google.com

Question 31

Which command displays network connections, routing tables, and interface statistics?

Answer 31

netstat netstat -a

Question 32

Which command configures or displays network interface settings?

Answer 32

ifconfig ifconfig eth0

Question 33

Which command queries DNS records for domain names?

Answer 33

nslookup nslookup example.com

Question 34

Which command shows the route packets take to reach a network host?

Answer 34

traceroute traceroute google.com

Question 35

Which command shows how long the system has been running since the last reboot?

Answer 35

uptime uptime

Question 36

Which command displays the current logged-in user name?

Answer 36

whoami whoami

Question 37

Which command creates a shortcut for a longer command or set of commands?

Answer 37

alias alias ll='ls -la'

Question 38

Which command removes an existing alias?

Answer 38

unalias unalias ll

Question 39

Which command displays the manual or documentation for a specific command?

Answer 39

man man ls

Question 40

Which command displays the first few lines of a file?

Answer 40

head head -n 10 file.txt

Question 41

Which command displays the last few lines of a file?

Answer 41

tail tail -n 10 file.txt

Question 42

Which command compares the contents of two files and shows the differences between them?

Answer 42

diff diff file1.txt file2.txt

Question 43

Which command sorts the lines of a file or input in alphabetical or numerical order?

Answer 43

sort sort file.txt

Question 44

Which command removes duplicate lines from a file?

Answer 44

uniq uniq file.txt

Question 45

Which command counts the number of lines, words, and characters in a file?

Answer 45

wc wc file.txt

Question 46

Which command reads input and writes the output both to a file and the terminal?

Answer 46

tee echo 'text' | tee file.txt

Question 47

Which command constructs and executes commands using input from standard input?

Answer 47

xargs echo 'file1 file2' | xargs rm