On Fri, Aug 29, 2008 at 6:51 AM, Heston James <[EMAIL PROTECTED]> wrote: > Good afternoon all. > > I have an application/script which is launched by crontab on a regular > basis. I need an effective and accurate way to ensure that only one instance > of the script is running at any one time. > > After a short look around the internet I found a couple of examples, such as > this one (http://code.activestate.com/recipes/474070/), however they both > seem to be focused on a windows based environment. > > Can anyone offer their advice on how best to do this on a linux based > system? > > I have been contemplating the idea of creating a pidfile which is destroyed > at the end of the script, will this suffice? is it fool proof? My only > concern with this is that if the script crashes or is stopped halfway > through processing for whatever reason, I'll be left with a dead pidfile on > the system and no successive runs will work. > > I'm really interested to get your ideas guys, Thanks. > > Heston > > ________________________________ > Get Hotmail on your mobile from Vodafone Try it Now! > -- > http://mail.python.org/mailman/listinfo/python-list >
Why not look at the process list, and if you find two entries kill the one that is just starting? -- Stand Fast, tjg. [Timothy Grant] -- http://mail.python.org/mailman/listinfo/python-list
