CommandLineDefs

Question 1

pwd

Answer 1

print working direcdtory

Question 2

hostname

Answer 2

My computer’s network 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 insdie a file

Question 16

man

Answer 16

read a manual page

Question 17

apropos

Answer 17

find what man page is approproate

Question 18

env

Answer 18

look at your enviroment

Question 19

echo

Answer 19

print some arguments

Question 20

exit

Answer 20

exit the shell

Question 21

sudo

Answer 21

DANGER! become super user root DANGER!

Question 22

chmod

Answer 22

change permision modifiers

Question 23

chown

Answer 23

change ownership

Question 24

|

Answer 24

The | takes the output from the command on the left, and “pipes” it to the command on the right.

Question 25

<

Answer 25

The < will take and send the input from the file on the right to the program on the left.

Question 26

>

Answer 26

The > takes the output of the command on the left, then writes it

to the file on the right.

Question 27

> >

Answer 27

The&raquo_space; takes the output of the command on the left, then appends it to the file on the right.

Question 28

*

Answer 28

“matches anything in a wildcard like *.txt

Question 29

xargs

Answer 29

The xargs utility reads space, tab, newline and end-of-file delimited strings from the standard input and executes utility with the strings as arguments.

Question 30

sudo

Answer 30

sudo allows a permitted user to execute a command as the superuser or another user, as specified in the sudoers file.

Question 31

chmod

Answer 31

The chmod utility modifies the file mode bits of the listed files as speci-fied by the mode operand.

Question 32

chown

Answer 32

The chown utility changes the user ID and/or the group ID of the specified files.