#!/bin/bash

function blah()
{
	test "${DELDIR}" == "" && echo "The next line is bash doing it wrong"
	if [ -d ${DELDIR} ]
	then
		echo "Executing: rm -rf ${DELDIR}/*"
	else
		echo "No."
	fi
}

echo "Trying to delete content of directory defined in an undefined variable ..."
blah

echo "Trying to delete based on nonexisting directory (empty string is not a valid directory) ..."
DELDIR=
blah

echo "Doing it wrong by deleting /bin/bash/* ..."
DELDIR=/bin/bash
blah

echo "Trying to delete real directory content ..."
DELDIR=/tmp
blah

cat << 'END'

Fulfix:
Man kan använda if [ -d "${DELDIR}" ] istället.
Men det minsta bash kunde ha klagat på är ett syntax error eller linande när man
testar [ -d ${DELDIR} ] då DELDIR är odefinerat.
END