def writeFile(self, localFile, remoteFile, fileType=None, forceCheck=False):
        written = False

        checkFile(localFile)

        self.checkDbmsOs()

        if localFile.endswith('_'):
            localFile = decloakToTemp(localFile)

        if conf.direct or isStackingAvailable():
            if isStackingAvailable():
                debugMsg = "going to upload the file '%s' with " % fileType
                debugMsg += "stacked query SQL injection technique"
                logger.debug(debugMsg)

            written = self.stackedWriteFile(localFile, remoteFile, fileType, forceCheck)
            self.cleanup(onlyFileTbl=True)
        elif isTechniqueAvailable(PAYLOAD.TECHNIQUE.UNION) and Backend.isDbms(DBMS.MYSQL):
            debugMsg = "going to upload the file '%s' with " % fileType
            debugMsg += "UNION query SQL injection technique"
            logger.debug(debugMsg)

            written = self.unionWriteFile(localFile, remoteFile, fileType, forceCheck)
        else:
            errMsg = "none of the SQL injection techniques detected can "
            errMsg += "be used to write files to the underlying file "
            errMsg += "system of the back-end %s server" % Backend.getDbms()
            logger.error(errMsg)

            return None

        return written