Command Line Interface

Question 1

my computer’s network name

Answer 1

hostname

Question 2

make directory

Answer 2

mkdir

Question 3

change directory

Answer 3

cd

Question 4

list directory

Answer 4

ls

Question 5

remove directory

Answer 5

rmdir

Question 6

push directory

Answer 6

pushd

Question 7

pop directory

Answer 7

popd

Question 8

copy a file or directory

Answer 8

cp

Question 9

move a file or directory

Answer 9

mv

Question 10

page through a file

Answer 10

less

Question 11

print the whole file

Answer 11

cat

Question 12

execute arguments

Answer 12

xargs

Question 13

find files

Answer 13

find

Question 14

find things inside files

Answer 14

grep

Question 15

read a manual page

Answer 15

man

Question 16

find which manual page is appropriate

Answer 16

apropos

Question 17

look at your environment

Answer 17

env

Question 18

print some arguments

Answer 18

echo

Question 19

export/set a new environment variable

Answer 19

export

Question 20

exit the shell

Answer 20

exit

Question 21

DANGER! become super user root DANGER!

Answer 21

sudo

Question 22

To write in a file

Answer 22

nano

Question 23

to save in nano

Answer 23

ctrl + O

Question 24

to exit nano

Answer 24

ctrl + X

Question 25

to exit less

Answer 25

Q

Question 26

What are the cursor navigation prompts?

Answer 26

CTRL + a : Move to end
CTRL + e : Move to end
Use Up and Down arrow keys to toggle through previous commands
CTRL + u : Clears current line
CTRL + l : Clears the terminal window (does not clear history)

Question 27

How to display hidden files?

Answer 27

ls -a

Question 28

How to move files into directories?

Answer 28

mv + file_to_move + destination_path : Move a file or folder to a new location

mkdir + directory1 + directory2 + directory3… : Make multiple directories at once.

Question 29

How to merge branches after making a commit?

Answer 29

git merge (branch not worked on yet)

Question 30

What is rebasing?

Answer 30

It takes a set of commits, copies them and sets them down somewhere else.

git rebase