fsync Synchronizes changes to the file (including meta-data) &reftitle.description; boolfsync resourcestream This function synchronizes changes to the file, including its meta-data. This is similar to fflush, but it also instructs the operating system to write to the storage media. &reftitle.parameters; stream &fs.validfp.all; &reftitle.returnvalues; &return.success; &reftitle.examples; ]]> &reftitle.seealso; fdatasync fflush