fswatch

#!/bin/bash

fswatch -0 --event Created /path/to/my/directory | while read -d '' file; \
do \
    if [[ -e ${file} ]]
    then
        chmod=`stat -f "%p" "${file}"`
        user=`stat -f "%Su" "${file}"`
        group=`stat -f "%Sg" "${file}"`

        if [[ -d ${file} ]]
        then
            new_user="xxx";
            new_group="staff";
            new_chmod="770";
        elif [[ -f ${file} ]]
        then
            new_user="xxx";
            new_group="staff";
            new_chmod="775";
        fi

        if [[ $user != $new_user || $group != $new_group ]]
        then
            chown $new_user:$new_group "${file}";
        fi

        if [[ $chmod != "100$new_chmod" && $chmod != "40$new_chmod" ]]
        then
            chmod $new_chmod "${file}";
        fi
    fi
done