#!/usr/bin/env bash# @author frank# @email frank@mondol.info# @created 2016-09-01## Usage: remove-bom.sh filePath|dirPathremoveBomByFile() {    bomFile=`grep -I -l $‘^\xEF\xBB\xBF‘ $1`    if [ x$1 = x$bomFile ]; then        # has BOM        sed -i ‘s/\xEF\xBB\xBF//‘ $1        echo BOM removed by file: $1    fi}if [ -d $1 ]; then    for filePath in `find $1 -type f | grep -vE "/\.[^/]+/"`    do        # grep exclude hide files        removeBomByFile $filePath    doneelif [ -e $1 ]; then    removeBomByFile $1else    echo $1 is not a file or directoryfi