Let’s say you have a script that works when run in an interactive session, but does not produce expected results when run from cron. What could be the problem? Some potential culprits include: Or it could be something else. How to troubleshoot this then, and where to start? Instead of trying fixes at random, I prefer to start by looking at logs.

When a cron job does not run on time, Healthchecks can notify you using various methods. One of the supported methods is Signal messages. Signal is an end-to-end encrypted messenger app run by a non-profit Signal Foundation. Signal’s mobile client, desktop client, and server are free and open-source software (with some exceptions–read on!).