On Aug 29, 11:25 pm, Uberman <[EMAIL PROTECTED]> wrote: > 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. >
The following is taken from the getmail FAQ - ------------------------------------------ If you need to prevent two instances of getmail from running simultaneously, use any standard Unix method of providing a mutex for this purpose. One example would be to run getmail under a program like setlock (part of the daemontools package). Change your script or crontab file to invoke getmail like this: /path/to/setlock -n /path/to/lockfile /path/to/getmail [getmail options] There are other programs that provide functionality similar to setlock. ------------------------------------------ HTH Frank Millman -- http://mail.python.org/mailman/listinfo/python-list
