ulimit -n

cat Makefile | grep pr | head -n 5 | cd test (mybin)
echo $?

cat Makefile | grep pr | head -n 5 | cat test (bin)
echo $?

cat Makefile | grep pr | head -n 5 | hello (NA)
echo $?

#---------------------------------------------
# Race condition, unpredictable behaviour
echo DOET HET NIET > test1 | cat test1


#----------------------------------------------
# \ Backslash

echo "bip | bip ; coyotte > < \" "

echo bonjour > test\ 1
ls
rm test

#----------------------------------------------
# ; Semicolon separator

echo hallo | echo poep >x1 >x2
echo hallo ; echo poep >x1 >x2

echo hallo | echo hoi > y1 >y2 ; cat -e
echo "hello | this is some stuff > touch this file" | grep more


#----------------------------------------------
# Export builtins

export | grep -e "HOME="

export | grep -e "PWD="

#----------------------------------------------
# \ Echo Backslash

echo   \\

echo "\\"

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 \~