[SOLVED] Syncing only one file to disk

[thb]

Hello everyone

I'm trying to create a simple bash script that force syncs one single file to disk. So far, I've used the "sync" command but this flushes ALL file cashes. Since I'd like to run this script like every 5 seconds, "sync" is not the right tool.
From some site I got this piece of code:

#!/bin/bash
while true
do
    date > /tmp/.poke
    fsync /tmp/.poke
    sleep 5
done

However, my system (Kubuntu 9.10) does not seem to have the "fsync" command. So is there a bash command or other way to sync only one specific file?

To anyone who wonders what this is about, the answer is WD's glorious IntelliPark

[thb]

Ok, nevermind. Despite reports that say otherwise, WDIDLE3.EXE actually works and my box is silent again