#
# ENV
#

env

#
# EXPORT
#

export var

export var=test

export var ="cat Makefile | grep >"

export "test=ici"=coucou

export LOL=lala ROR=rara

export "HI= hi"

export "HI =hi"

export
env
# display is different for both commands

env
export
env

#
# UNSET
#

export BLOU=
env
unset BLOU
env

unset LOL ROR
env

unset blablabla
env

export ""
env
unset ""
env

#
# ECHO
#

echo

echo simple

echo -n simple

echo -n -n -nnnn -nnnnm

#
# PWD
#

pwd a

pwd a b c d

#
# CD
#

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
#

exit -10

exit +10