Basic Ubuntu cmds

Question 1

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sudo

Answer 1

Linux command allows you to run programs or other commands with administrative privileges

Question 2

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apt-get

Answer 2

used to install, update, upgrade and remove any package

Question 3

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sudo apt-get update

Answer 3

update with super user privileges

Question 4

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sudo apt-get upgrade

Answer 4

After updating the package database, next step is to to upgrade the installed packages

Question 5

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sudo apt-get install

Answer 5

easily install a program using this command

Question 6

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sudo apt-get remove

Answer 6

removing the installed program

Question 7

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sudo apt-get purge

Answer 7

used when you want to remove a software completely from your system with its configuration

Question 8

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sudo apt-get autoremove

Answer 8

used to remove any unnecessary packages

Question 9

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ls

Answer 9

lists all files and folders in your current working directory

Question 10

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cd

Answer 10

change director

Question 11

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cd /

Answer 11

Takes you to the root directory

Question 12

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cd ..

Answer 12

Takes you up one directory level

Question 13

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cd �

Answer 13

Takes you to the previous directory

Question 14

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pwd

Answer 14

print working directory

Question 15

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cp

Answer 15

allows you to copy a file

Question 16

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mv

Answer 16

allows you to move files

Question 17

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rm

Answer 17

removes the specified file

Question 18

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mkdir

Answer 18

allows you to create a new directory or file

Question 19

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history

Answer 19

displays all of your previous commands up to the history limit

Question 20

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df

Answer 20

displays information about the disk space usage of all mounted file systems

Question 21

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du

Answer 21

displays the size of a directory and all of its subdirectories

Question 22

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free

Answer 22

Displays the amount of free space available on the system

Question 23

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top

Answer 23

Displays the processes using the most system resources at any given time

Question 24

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passwd

Answer 24

used to change user password using Terminal

Question 25

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Ctrl + Shift + T

Answer 25

Open new tab on current terminal

Question 26

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Ctrl + Shift + W

Answer 26

Close the current tab

Question 27

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Ctrl + A

Answer 27

Move cursor to beginning of line

Question 28

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Ctrl + E

Answer 28

Move cursor to end of line

Question 29

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Ctrl + U

Answer 29

Clears the entire current line

Question 30

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Ctrl + K

Answer 30

Clears the command from the cursor right

Question 31

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Ctrl + W

Answer 31

Delete the word before the cursor

Question 32

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Ctrl + R

Answer 32

Allows you to search your history for commands matching what you have typed

Question 33

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Ctrl + C

Answer 33

Kill the current process

Question 34

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Ctrl + Z

Answer 34

Suspend the current process by sending the signal SIGSTOP; SIGSTOP signal instructs the operating system to stop a process

Question 35

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Ctrl + L

Answer 35

Clears the terminal output

Question 36

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Alt + F

Answer 36

Move forward one word

Question 37

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Alt + B

Answer 37

Move backward one word

Question 38

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Ctrl + Shift + C

Answer 38

Copy the highlighted command to the clipboard

Question 39

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Ctrl + Shift + V or Shift + Insert

Answer 39

Paste the contents of the clipboard