verbose:=fsMetaSaveCommand.Bool("v",false,"print out each processed files")
outputFileName:=fsMetaSaveCommand.String("o","","output the meta data to this file. If file name is ends with .gz or .gzip, it will be gzip compressed")
outputFileName:=fsMetaSaveCommand.String("o","","output the meta data to this file. If file name ends with .gz or .gzip, it will be gzip compressed")
isObfuscate:=fsMetaSaveCommand.Bool("obfuscate",false,"obfuscate the file names")
// chunksFileName := fsMetaSaveCommand.String("chunks", "", "output all the chunks to this file")