Linux Command Line

Question 1

mkdir

Answer 1

make directory

Question 2

rmdir

Answer 2

remove directory

Question 3

touch

Answer 3

create a file within a directory

Question 4

rm

Answer 4

remove a file

Question 5

mv

Answer 5

move or rename files

Question 6

/

Answer 6

root directory

Question 7

..

Answer 7

go up to parent directory

Question 8

absolute path

Answer 8

any path that starts with /

Question 9

whoami

Answer 9

remind you of username

Question 10

~

Answer 10

starting from the home directory

Question 11

mkdir -p

Answer 11

any directories listed after and separated by a forward slash will be nested within one another

Question 12

>

Answer 12

capture the output of a command, followed by name of file to write to

Question 13

cat

Answer 13

look at the content of a file, concatenate

Question 14

echo

Answer 14

prints its arguments back out again

Question 15

?

Answer 15

any single character

Question 16

*

Answer 16

zero or more characters

Question 17

> >

Answer 17

append to, rather than replace

Question 18

less

Answer 18

see things in an easier view, press q to quit

Question 19

rm -r

Answer 19

delete a directory and all folders inside

Question 20

wc

Answer 20

word count

Question 21

|

Answer 21

pipe the output from first command as input for second command

Question 22

uniq

Answer 22

output uniq lines in the file

Question 23

man

Answer 23

see the manual for a command

Question 24

su

Answer 24

switch to super user

Question 25

sudo

Answer 25

switch and do following command, prevents you from having to remember to exit out of super user once you are done

Question 26

.

Answer 26

dot before a file name makes it hidden