Command line shortcuts (OSX)

Question 1

Go to the home directory

Answer 1

cd ~

Question 2

Go up a folder level

Answer 2

cd ..

Question 3

Read about a command

Answer 3

man

Question 4

Print out current working directory (path / name)

Answer 4

pwd

Question 5

Create a new directory

Answer 5

mkdir

Question 6

Make a new empty file

Answer 6

touch

Question 7

Copy a file

Answer 7

cp

Question 8

Move a file

Answer 8

mv

Question 9

Remove a file

Answer 9

rm

Question 10

Show the contents of a file in a scrolling buffer

Answer 10

less

Question 11

My computer’s network name

Answer 11

hostname

Question 12

Print out everything in a directory

Answer 12

ls

Question 13

Remove a directory

Answer 13

rmdir

Question 14

Push directory

Answer 14

pushd

Question 15

Pop directory

Answer 15

popd

Question 16

Print the whole file

Answer 16

cat

Question 17

Execute arguments

Answer 17

xargs

Question 18

Find files

Answer 18

find

Question 19

Find things in files

Answer 19

grep

Question 20

Find what man page is appropriate

Answer 20

apropos

Question 21

Look at your environment

Answer 21

env

Question 22

Print some arguments

Answer 22

echo

Question 23

Export/set a new environment variable

Answer 23

export

Question 24

Exit the shell

Answer 24

exit

Question 25

DANGER! become super user root DANGER!

Answer 25

sudo

Question 26

Change permission modifiers

Answer 26

chmod

Question 27

Change ownership

Answer 27

chown

Question 28

Output from commands on the left brought to commands on the right.

Answer 28

$ | $

Question 29

Send input from the command on the right to the command from the left

Answer 29

$<$

Question 30

Output from command on left and write it on file to the right

Answer 30

$>$

Question 31

Output of command on left and append to file on right

Answer 31

$»$

Question 32

Matches anything in a wildcard

Answer 32

*

Question 33

print all documents with a filename with a certain name

Answer 33

find STARTDIR -name WILDCARD -print

Question 34

Fill in the rest of the word you’ve started typing

Answer 34

tab

Question 35

Get your previous command

Answer 35

up

Question 36

Go to the beginning of the line

Answer 36

Ctrl + a

Question 37

Go to the end of the line

Answer 37

Ctrl + e

Question 38

Delete everything on the line after your current character

Answer 38

Ctrl + k

Question 39

Go to the next tab

Answer 39

Cmd + shift + [

Question 40

Go to the previous tab

Answer 40

Cmd + shift + ]