echo

echo simple

echo -n simple

echo -n -n -nnnn -nnnnm

pwd a

pwd a b c d

cd
pwd

cd .
pwd

cd ~
pwd

cd /
pwd

cd no_file
pwd

cd a b c d
pwd

cd $HOME/Documents
pwd

cd ../../../../../..
pwd

exit -10

exit +10

echo bonjour
/bin/echo bonjour

mkdir testt
./testt
cd ./testt
pwd

exit a aa a

pwd

Echo

echo   \\

exit 123 123 123

echo hi
echo
echo
echo

echo
echo
echo
echo working

echo

cd ..
pwd
/bin/ls

cd notworking

cd .

cd .. 
pwd
/bin/ls
cd .. 
      pwd    
/bin/ls
     cd notworking
     cd .

cd ~

pwd

pwd .

pwd ..

cd ../Desktop

echo

cd

cd poep

exit 99

exit 3 a

exit 55 99

echo \poep

echo \1

echo 123\!456

echo 123\456

echo \a

echo \b

echo \c

echo \d

echo \e

echo \!

echo \"

echo \#

echo \$

echo \%

echo \&

echo \'

echo \(

echo \)

echo \*

echo \+

echo \,

echo \-

echo \.

echo \/

echo \0

echo \1

echo \2

echo \3

echo \4

echo \5

echo \6

echo \7

echo \8

echo \9

echo \:

echo \=

echo \?

echo \@

echo \A

echo \B

echo \C

echo \D

echo \E

echo \F

echo \G

echo \H

echo \I

echo \J

echo \K

echo \L

echo \M

echo \N

echo \O

echo \P

echo \Q

echo \R

echo \S

echo \T

echo \U

echo \V

echo \W

echo \X

echo \Y

echo \Z

echo \[

echo \\

echo \]

echo \^

echo \_

echo \a

echo \b

echo \c

echo \d

echo \e

echo \f

echo \g

echo \h

echo \i

echo \j

echo \k

echo \l

echo \m

echo \n

echo \o

echo \p

echo \q

echo \r

echo \s

echo \t

echo \u

echo \v

echo \w

echo \x

echo \y

echo \z

echo \{

echo \}

echo \~