Linux

Question 1

What are the different linux desktop managers?

Answer 1

KDE, GNOME, XFCE, UNITY

Question 2

What is the key combination to get to the console of a linux computer?

Answer 2

Ctrl + Alt + F1

Question 3

What is the difference between the terminal and console?

Answer 3

Terminal is a virtual window into the shell

Console directly communicates to the shell

Question 4

What is the linux command to change your password?

Answer 4

passwd

Question 5

What is the linux command to view current directory ?

Answer 5

ls

dir

Question 6

What is the linux command to view current directory with detailed info?

Answer 6

ls -l

Question 7

What is the linux command to view an alternate directory?

Answer 7

ls

Question 8

What is the linux command to display the contents of a file?

Answer 8

cat

Question 9

How do you assign variables in linux?

Answer 9

n=anything

calling variables:
$n

Question 10

What is globbing in linux?

Answer 10

Shell interprets wildard characters * and ?
* - All wildward
? - Single character wildcard

ls file?.txt - Specifies 5 characters exactly
ls file*.txt - Specifies any length

Question 11

What is the linux command to see where a command is stored?

Answer 11

which
whereis

i.e:
which ls
»>
/bin/ls

Question 12

What is the stored variable $PATH and how do you view it?

Answer 12

It is a group of directories separated by colons, tells the shell where to look for specific commands

echo $PATH

Question 13

How do you run separate commands on the same line?

Answer 13

;

i.e:
ls; lsmod

Question 14

What is the linux command to view all commands previously typed?

Answer 14

history

Question 15

What is the linux command to view documentation on a command?

Answer 15

man
info

man ls
info ls

Question 16

What is apropos?

Answer 16

apropos or: man -k
command used to see what help documentation has specified text
i.e:
man -k arbitrary

Question 17

What is the linux command to view a brief desctription of what a command is?

Answer 17

whatis

whatis ls

Question 18

What is the linux command to view all directories and subdirectories?

Answer 18

ls -R

Question 19

What is the linux command to see the current working directory?

Answer 19

pwd

Question 20

What is the linux command to change directory to the user home directory?

Answer 20

cd ~
or
cd

Question 21

What is the linux command to change to the directory above?

Answer 21

cd ..

Question 22

What is the parameter to get help with a command?

Answer 22

–help

Question 23

What is the linux command to see all files including hidden?

Answer 23

ls -a

Question 24

What is /dev/sda?

Answer 24

Device location of bootloader hard disk
Letter following is the drive ordering
Number signifies the partition i.e /dev/sda1

Question 25

What is /dev/nvme0n1?

Answer 25

Device location of boot loader NVMe hard disk
Number following is the drive ordering
Partitions specified with p i.e /dev/nvme0n1p1

Question 26

What is the command to list all files with corresponding file types?

Answer 26

ls -p

Question 27

What is the command to list all files in order of file size?

Answer 27

ls -s

Question 28

What is the linux command to run the previous command?

Answer 28

!!

!! is a variable containing last issued command

Question 29

What is the linux command to permanently switch user on the terminal?

Answer 29

su

Question 30

What are the different package managers?

Answer 30

apt, yum, dnf, pkg