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

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