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- Kindo – Welcome to the family. 網上族譜
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Here is something that I had to find the moderately hard way:
When used on an NFS filesystem, Linux's
umount -fwill force anyoutstanding IO operations to fail with an error, whether or not theunmount will succeed.
This can be both good and bad, but on the whole I think it's mostly bad.
If the NFS server has died completely and the outstanding IO can neversucceed, you do want things to abort now instead of hanging around. Inthis case umount -f '
I hope that Firefox's remote control feature is reasonably well known,but I suspect most people don't know about the surprising and relativelyweird effects it has in the Unix version of Firefox; certainly itsurprised my co-workers when they stumbled across it.
(Remote control is the feature where if you already have a runningFirefox and try to start another one, it will just open a new browserwindow (or tab) in the first one.)
The root of the surprising behavior comes from how


當iPod還是大大舊的時候,我已經愛帶著那40G四圍走,跑步去。
今時今日,輕巧的iPod Nano加埋NikePlus,我可以一邊跑步一邊聽歌一邊有個鬼妹(你都可以揀鬼仔)話我知我跑了多少公里,簡直就係完美配搭。
更重要的是,這配搭會