Linux/OSX Commands

Question 1

pwd

Answer 1

print working directory

Question 2

hostname

Answer 2

my pc network’s name

Question 3

mkdir

Answer 3

make directory

Question 4

cd

Answer 4

change directory

Question 5

ls

Answer 5

list directory

Question 6

rmdir

Answer 6

remove directory

Question 7

pushd

Answer 7

push directory

Question 8

popd

Answer 8

pop directory

Question 9

cp

Answer 9

copy a file or directory

Question 10

mv

Answer 10

move a file or directory

Question 11

less

Answer 11

page through a file

Question 12

cat

Answer 12

print the whole file

Question 13

xargs

Answer 13

execute arguments

Question 14

find

Answer 14

find files

Question 15

grep

Answer 15

find things inside files

Question 16

man

Answer 16

read a manual page

Question 17

apropos

Answer 17

find what man page is appropriate

Question 18

env

Answer 18

look at your environment

Question 19

echo

Answer 19

print some arguments

Question 20

export

Answer 20

export/set a new environment value

Question 21

exit

Answer 21

exit the shell

Question 22

sudo

Answer 22

Super User

Question 23

chmod

Answer 23

change permission modifiers

Question 24

chown

Answer 24

change ownership

Question 25

cat

Answer 25

Add something to a file, print the file in the console

Question 26

|

Answer 26

Execute the left function | into the right statement

Question 27

<

Answer 27

Left Output, Right Input

Question 28

>

Answer 28

Left Input, Right Output

Question 29

touch

Answer 29

Create an empty file/Change the date of the last time the file was modified