Linux Commands

Question 1

ls

Answer 1

List files and directories

Question 2

grep

Answer 2

Looks for specific patterns in text files

Question 3

cd

Answer 3

Change Directory

Question 4

shutdown

Answer 4

Shutdown

Question 5

pwd

Answer 5

Present Working Directory

Question 6

passwd

Answer 6

Change Password

Question 7

mv

Answer 7

Move (not copy)

Question 8

cp

Answer 8

Copy

Question 9

rm

Answer 9

Remove files

Question 10

chmod

Answer 10

Modify read, write and execute permissions

Question 11

chown

Answer 11

Change/Modify ownership

Question 12

ps

Answer 12

Process State (running processes)

Question 13

su

Answer 13

Switch User

Question 14

sudo

Answer 14

Run Command as specific user

Question 15

apt-get

Answer 15

Install, remove & update packages

Question 16

yum

Answer 16

Installing, deleting, querying and managing Red Hat Enterprise software packages

Question 17

df

Answer 17

Display amount of diskspace available

Question 18

man

Answer 18

Display user manual of any command

Question 19

top

Answer 19

Show active Linux processes in dynamic real-time

Question 20

find

Answer 20

Locate data on system

Question 21

dig

Answer 21

Domain Information Groper

Gather DNS information

Question 22

cat

Answer 22

Reads data from a file and gives its content as an output

Question 23

nano

Answer 23

Command Line based text editor