Block 4 +

Question 1

How to add a user. -c. And -G

Answer 1

Useradd. -c for comment (usually full name. -G to add to a specific group

Question 2

Create password in linux

Answer 2

Passwd. Also creates a new user and user group.

Question 3

Modify a user. And how to lock their account

Answer 3

Usermod. -L to lock account.

Question 4

Delete a user

Answer 4

Userdel

Question 5

Archive and gzip compress

Answer 5

Tar -czf

Question 6

Archive and bzip2 compress

Answer 6

Tar -cjf

Question 7

Archive and xz compress

Answer 7

Tar -cJf

Question 8

Preview a tar file without decompressing it

Answer 8

Tar -tf

Question 9

Unzip any type of files

Answer 9

Tar -xf

Question 10

How to change permissions

Answer 10

Chmod

Question 11

Adding a group to system

Answer 11

groupadd

Question 12

Renaming a group and new name sub

Answer 12

groupmod. -n to change name. New name…old name

Question 13

Group delete

Answer 13

groupdel

Question 14

Get info on users and groups

Answer 14

retention (get entity).

Question 15

What d holds list of groups and members

Answer 15

/etc/group

Question 16

Adding a user to group

Answer 16

usermod -aG group user

Question 17

Remove user from all groups but their own

Answer 17

usermod -G

Question 18

Shows location of binary files

Answer 18

which $(passwd)

Question 19

Finds all versions of word, upper case, lower case, 1st letter cap and rest lower

Answer 19

grep -i

Question 20

Find everything that doesn’t contain the word

Answer 20

grep -v

Question 21

Shows what line text is on

Answer 21

grep -n

Question 22

Shows 5 lines before line with text

Answer 22

grep -b5

Question 23

Find how many times the text shows up

Answer 23

grep -c

Question 24

How to search a dir

Answer 24

grep -r

Question 25

Find text like grep but put output into columns

Answer 25

awk

Question 26

awk format

Answer 26

awk -F ':' "{print $1}" file, print column 1. Sort @ :

Question 27

What is APT and what is it used for

Answer 27

Advance packaging tool. Used to bring or get rid of apps from the terminal

Question 28

Apt remove

Answer 28

Removes the app but keeps associated files

Question 29

Apt purge

Answer 29

Gets rid of app and all related files.

Question 30

Apt update

Answer 30

Will list all available updates in the advanced packaging tool

Question 31

Apt upgrade

Answer 31

Will update all software

Question 32

What is dpkg -l

Answer 32

Search system for all packages (apps) and list

Question 33

What is top

Answer 33

Shows all processes. Like windows task manager