foldersize.sh

#/bin/bash
set -e
set -u
#set -x

diskusage () { # (directory)
 pushd $1 > /dev/null
 echo "## $(pwd) ##"
 du -xk --max-depth=1 | sort -nr | awk '
     BEGIN {
        split("KB,MB,GB,TB", Units, ",");
     }
     {
        u = 1;
        while ($1 >= 1024) {
           $1 = $1 / 1024;
           u += 1
        }
        $1 = sprintf("%.1f %s", $1, Units[u]);
        print $0;
     }
    '
popd > /dev/null
}

if [ $# -gt 0 ]
 then
  counter=0
  for i in $* ; do
   let counter++ || true
   if [ -d $i ] ; then
    diskusage $i
   else
    echo "Path $i does not exist!"
   fi
   [ $counter -lt $# ] && echo || true
  done
 else
  diskusage .
fi