source: vendor/bash/3.1/examples/functions/emptydir

#! /bin/bash
#
#Derived from:
#
#From: damercer@mmm.com (Dan Mercer)
#Newsgroups: comp.unix.admin,comp.unix.shell,comp.unix.programmer,comp.sys.sun.admin
#Subject: Re: Command to find out if a directory is empty
#Date: 17 Aug 2000 14:35:56 GMT
#Message-ID: <8ngt8c$fmr$1@magnum.mmm.com>

# usage: emptydir [dirname] ;  default dirname is "."

emptydir()
{
        typeset file dir=${1:-.}
        [[ -d $dir ]] || {
                echo "$FUNCNAME: $dir is not a directory" >&2
                return 2
        }
        for file in $dir/.* $dir/*
        do
                case ${file#$dir/} in
                .|..) ;;
                \*) [[ -e $file ]];let $?;return;;
                *) return 1;;
                esac
        done
}