Check directory size

.du

#!/bin/sh

DEPTH=1

if [ "$1" = "-h" ] || [ "$1" = "--help" ] || [ "$1" = "help" ] || [ "$1" = "h" ] ;then
    cat <<EOF

    ======================================================
    .du usage : .du {check directory maxdepth} (default 1)
    ======================================================
    e.g. 
         1) .du 
         2) .du 3

EOF
    exit 255
fi

if [ -n "$1" ];then
    DEPTH=$1
fi

DIRLIST=$(find ./ -maxdepth $DEPTH -type d 2>/dev/null)
if [ -z "$DIRLIST" ]; then
    echo "Input: $DEPTH: use number!"
    exit 255
fi

for DIR in $DIRLIST;do
    du -sh $DIR
done