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    A better approach might be the time since the last successful run; I had the misfortune of having to support a workflow that assumed the last job ran an hour prior once... Commented Apr 20, 2017 at 18:18
  • Oh, been there; done that. I ended up writing this probably-too-convoluted job that dropped state files in /var/run which subsequent instances of the job would inspect. Commented Apr 20, 2017 at 18:25