Øyvind Dahl odadoda

## echo-exit-status
echo “do a command to check exit status”
echo $?

## direcotires-with-commands
/usr/bin
/bin
/usr/sbin
/sbin
/usr/local/bin

## content-of-path
/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin

## ls-bin
echo $PATH

## ls-bin
ls /bin

## if-ls.sh
if ls ; then
    echo “listed all the files”
else
    echo “error”
fi

## if-foo.sh
if [ “Foo” == “Foo” ] ; then
    echo “Its equal”
fi

## if-100.sh
$NUMBER=100

if [ $NUMBER -eq 100 ] ; then
    echo “Number is equal”
fi

## while-syntax.sh
while command ; do
    something
done

## for-loops.sh
# for-each
MY_ARRAY=("one", "two", "three")

for i in MY_ARRAY ; do
    echo $i
done

# extended for-loop
for (( i=0; i "-lt" 3; i++ )) ; do
    echo $i
	if ls ; then
	echo “listed all the files”
	else
	echo “error”
	fi
	$NUMBER=100

	if [ $NUMBER -eq 100 ] ; then
	echo “Number is equal”
	fi
	# for-each
	MY_ARRAY=("one", "two", "three")

	for i in MY_ARRAY ; do
	echo $i
	done

	# extended for-loop
	for (( i=0; i "-lt" 3; i++ )) ; do
	echo $i