Re: [iPAQ] run-once ?

On Mon, Dec 31, 2001 at 12:26:16AM +0000, Alan Cox wrote:
> Something as simple as doing
>
> open lockfile
> flock lockfile
> exec binary
>
> will work. The binary will close the lock file when it exits,breaking the
> lock. flock allows you to test a lock so you can avoid blocking taking it

that part is easy. I would, however, prefer to look into /proc or ps
instead, just to make sure that a) I catch cases where the binary is
started by other means, too and b) to avoid all sorts of trouble with
lockfiles not being removed correctly (kill -9).

the more interesting part is dealing with the "it already runs" case.
cycling it to the foreground would probably be the best answer. that is
windowmanager territory, something I haven't coded in so far.

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