mutex?

[Baruch Siach]

Hi David,

On Thu, Dec 02, 2010 at 10:59:00AM +0000, David Collier wrote:
> I have a .sh file which appends to the end of a log file. It is called
> from a number of different shells.
> 
> Clearly if I start 2 copies at once, there's a risk they will argue.
> 
> Is there any way to set up a mutex, so that only one copy can run at a
> time?
> 
> There's some c code that writes it, and that uses flock - can I share
> that lock?

flock(1)?

baruch

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