Shell Programming and Scripting

temp="temp.txt"

if [ $# -ne 1 ]; then
      echo "Wrong parameter"
 else
      if [ -d "$1" ]; then
             rm "$temp"                        #Delete any previous temp file
             find "./$1" -maxdepth 1 -type f >> "$temp"           
             #save the found files to the temp file

IFS="           #set for breaking characters
"
size=0
files=`cat "$temp"`     #read the temp file
rm "$temp"                 
#delete the temp file (making sure its size wont be read)

#size counting
for i in $files; do
   if [ -f $i ]; then
      size=$(expr $size + $(stat -c%s "$i"))
   fi
done

echo "The directory's size is : $size"
else 
echo "A non directory parameter was given"
fi
fi

find "./$1" -maxdepth 1 -type f > "$temp"