ulimit -n

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

echo "\\"

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 $?