file-flush 4.0

file-flush

Forces file updates to be written to disk. When you use file-write or other output commands, the values may not be immediately written to disk. This improves the performance of the file output commands. Closing a file ensures that all output is written to disk.

Sometimes you need to ensure that data is written to disk without closing the file. For example, you could be using a file to communicate with another program on your machine and want the other program to be able to see the output immediately.